PlainTariff

HTS Chapter 90 · Section XVIII

Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof

Chapter 90 averages a 1.0% general (MFN) duty across its 302 rated tariff lines, with the steepest line reaching 16%.

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1.0%
avg MFN duty
16%
highest line
302
rated tariff lines
73%
enter duty-free

Tariff lines in Chapter 90 by duty-rate band

How the 302 rated lines in this chapter distribute across general (MFN) rate ranges

Duty-free2170.1–5%625–10%1810–20%2

Source: USITC HTS 2026 As of 2026

About HTS Chapter 90

HTS Chapter 90 - Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof - organizes 671 tariff classifications in the US Harmonized Tariff Schedule. Of these, 302 carry explicit duty rates at the tariff-line level, meaning importers can look up a specific Column 1 General (MFN) rate for every qualifying shipment. Chapter 90 sits within Section XVIII (Optical, Photographic, Measuring, Medical Instruments), which groups commercially related product categories together.

The average general duty rate across all tariff lines in this chapter is 1.0%, with the highest individual rate reaching 16%. Duty burden varies widely across tariff lines within this chapter, classification precision matters. Below, each line links to its individual detail page showing General, Special (FTA), and Column 2 rates.

Use this chapter page as the entry point for classifying any product that falls under optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof. The tree below preserves the HTS indentation hierarchy (heading → subheading → tariff line), so you can narrow from broad category to specific 8-10 digit code. All data comes from the US International Trade Commission (USITC) HTS 2026 Basic Edition, the official schedule of import duties used by US Customs and Border Protection.

Chapter 90 At a Glance

Tariff distribution statistics for HTS Chapter 90 from USITC 2026 Basic Edition.
Metric Value Notes
Total tariff classifications 671 All headings, subheadings, and tariff lines.
Lines with explicit rates 302 Tariff lines carrying a Column 1 General duty.
Average general rate 1.0% Mean MFN rate across rated lines.
Highest line rate 16% Peak Column 1 General rate within the chapter.

Source: USITC Harmonized Tariff Schedule 2026 Basic Edition. Computed at last data refresh, see methodology.

Tariff Lines

9001 Optical fibers and optical fiber bundles; optical fiber cables other than those of heading 8544; sheets and plates of polarizing material; lenses (including contact lenses), prisms, mirrors and other optical elements, of any material, unmounted, other than such elements of glass not optically worked:
9001.10.00 Optical fibers, optical fiber bundles and cables
6.7%
Optical fibers:
9001.10.00.30 For transmission of voice, data or video communications
m
Other:
9001.10.00.50 Plastic optical fibers
m
9001.10.00.70 Other
m
Optical fiber bundles and cables:
9001.10.00.75 Plastic optical fiber bundles and cables
Fiber m
9001.10.00.85 Other
Fiber m
9001.20.00.00 Sheets and plates of polarizing material
kg
Free
9001.30.00.00 Contact lenses
No.
2%
9001.40.00.00 Spectacle lenses of glass
prs.
2%
9001.50.00.00 Spectacle lenses of other materials
prs.
2%
9001.90 Other:
9001.90.40.00 Lenses
No.
Free
9001.90.50.00 Prisms
No.
Free
9001.90.60.00 Mirrors
No.
Free
Other:
9001.90.80.00 Halftone screens designed for use in engraving or photographic processes
No.
Free
9001.90.90.00 Other
No.
Free
9002 Lenses, prisms, mirrors and other optical elements, of any material, mounted, being parts of or fittings for instruments or apparatus, other than such elements of glass not optically worked; parts and accessories thereof:
Objective lenses and parts and accessories thereof:
9002.11 For cameras, projectors or photographic enlargers or reducers:
9002.11.40.00 Projection
No.
2.45%
Other:
9002.11.60.00 Mounted lenses suitable for use in, and entered separately from, closed-circuit television cameras, with or without attached electrical or non-electrical closed-circuit television camera connectors, and with or without attached motors
No.
Free
9002.11.90.00 Other
No.
2.3%
9002.19.00.00 Other
No.
Free
9002.20 Filters and parts and accessories thereof:
9002.20.40.00 Photographic
No.
Free
9002.20.80.00 Other
No.
Free
9002.90 Other:
9002.90.20.00 Prisms
No.
Free
9002.90.40.00 Mirrors
No.
Free
Other:
9002.90.70.00 Halftone screens designed for use in engraving or photographic processes
No.
Free
9002.90.85.00 Mounted lenses suitable for use in, and entered separately from, closed-circuit television cameras, with or without attached electrical or non-electrical closed-circuit television camera connectors, and with or without attached motors
No.
Free
9002.90.95.00 Other
No.
Free
9003 Frames and mountings for spectacles, goggles or the like, and parts thereof:
Frames and mountings:
9003.11.00.00 Of plastics
doz.
2.5%
9003.19.00.00 Of other materials
doz.
Free
9003.90.00.00 Parts
No.
2.5%
9004 Spectacles, goggles and the like, corrective, protective or other:
9004.10.00.00 Sunglasses
doz.
2%
9004.90.00 Other
2.5%
9004.90.00.10 Safety glasses or safety goggles
doz.
9004.90.00.90 Other
doz.
9005 Binoculars, monoculars, other optical telescopes, and mountings therefor; other astronomical instruments and mountings therefor, but not including instruments for radio-astronomy; parts and accessories thereof:
9005.10.00 Binoculars
Free
9005.10.00.20 Prism binoculars for use with infrared light
No.
9005.10.00.40 Other prism binoculars
No.
9005.10.00.80 Other
No.
9005.80 Other instruments:
9005.80.40 Optical telescopes
8%
9005.80.40.20 For use with infrared light
No.
9005.80.40.40 Other
No.
9005.80.60.00 Other
No.
6%
9005.90 Parts and accessories (including mountings):
9005.90.40.00 Incorporating goods of heading 9001 or 9002
No.
The rate applicable to the article of which it is a part or accessory
9005.90.80.01 Other
No.
The rate applicable to the article of which it is a part or accessory
9006 Photographic (other than cinematographic) cameras; photographic flashlight apparatus and flashbulbs other than discharge lamps of heading 8539; parts and accessories thereof:
9006.30.00.00 Cameras specially designed for underwater use, for aerial survey, or for medical or surgical examination of internal organs; comparison cameras for forensic or criminological purposes
No.
Free
9006.40 Instant print cameras:
9006.40.40.00 Fixed focus
No.
Free
Other than fixed focus:
9006.40.60.00 Valued not over $10 each
No.
6.8%
9006.40.90.00 Valued over $10 each
No.
Free
Other cameras:
9006.53.02 For roll film of a width of 35 mm
Free
9006.53.02.05 With through-the-lens viewfinder (single lens reflex (SLR))
No.
Other:
One time use cameras:
9006.53.02.10 With built-in electronic stroboscopic flash
No.
9006.53.02.20 Other
No.
Other:
9006.53.02.50 With built-in electronic stroboscopic flash
No.
9006.53.02.70 Other
No.
9006.59 Other:
For roll film of a width less than 35mm:
9006.59.01 With through-the-lens viewfinder (single lens reflex (SLR))
Free
9006.59.01.60 For magnetically sensitized roll film of a width of 24 mm
No.
9006.59.01.90 Other
No.
Other:
Fixed focus:
Hand held:
9006.59.05 110 cameras
Free
9006.59.05.20 With built-in electronic stroboscopic flash
No.
9006.59.05.40 Other
No.
9006.59.08.00 Other
No.
4%
9006.59.10.00 Other
No.
Free
Other than fixed focus:
9006.59.12.00 Valued not over $10 each
No.
6.8%
9006.59.15 Valued over $10 each
Free
Hand held:
110 cameras:
9006.59.15.20 With built-in electronic stroboscopic flash
No.
9006.59.15.40 Other
No.
9006.59.15.60 Other
No.
9006.59.15.80 Other
No.
Other:
9006.59.20.00 Cameras of a kind used for preparing printing plates or cylinders
No.
Free
9006.59.40 Fixed focus
4%
9006.59.40.40 Disc cameras
No.
9006.59.40.60 Other
No.
Other than fixed focus:
9006.59.60.00 Valued not over $10 each
No.
6.8%
9006.59.91.00 Valued over $10 each
No.
Free
Photographic flashlight apparatus and flashbulbs:
9006.61.00 Discharge lamp ("electronic") flashlight apparatus
Free
Capable of camera mounting:
9006.61.00.20 Capable of automatically controlling flash duration
No.
9006.61.00.40 Other
No.
9006.61.00.60 Other
No.
9006.69.01 Other
Free
9006.69.01.10 Flashbulbs, flashcubes and the like
No.
9006.69.01.50 Other
No.
Parts and accessories:
9006.91.00.01 For cameras
No.
5.8%
9006.99.00.00 Other
No.
3.9%
9007 Cinematographic cameras and projectors, whether or not incorporating sound recording or reproducing apparatus; parts and accessories thereof:
9007.10.00.00 Cameras
No.
Free
9007.20 Projectors:
For film of less than 16 mm:
9007.20.20.00 With sound recording and reproducing systems; and those capable of projecting only sound motion pictures
No.
Free
9007.20.40.00 Other
No.
4.9%
Other:
9007.20.60 With sound recording and reproducing systems; and those capable of projecting only sound motion pictures
Free
9007.20.60.40 16 mm
No.
9007.20.60.80 Other
No.
9007.20.80.00 Other
No.
3.5%
Parts and accessories:
9007.91 For cameras:
9007.91.40.00 Parts
kg
Free
9007.91.80.01 Other
kg
3.9%
9007.92.00.00 For projectors
kg
3.5%
9008 Image projectors, other than cinematographic; photographic (other than cinematographic) enlargers and reducers; parts and accessories thereof:
9008.50 Projectors, enlargers and reducers:
9008.50.10.00 Slide projectors
No.
7%
Microfilm, microfiche or other microform readers, whether or not capable of producing copies:
9008.50.20.00 Capable of producing copies
No.
Free
9008.50.30.00 Other
No.
3.5%
9008.50.40.00 Other image projectors
No.
4.6%
9008.50.50.00 Photographic (other than cinematographic) enlargers and reducers
No.
Free
9008.90 Parts and accessories:
9008.90.40.00 Of image projectors, other than cinematographic
kg
Free
9008.90.80.00 Other
kg
2.9%
9010 Apparatus and equipment for photographic (including cinematographic) laboratories, not specified or included elsewhere in this chapter; negatoscopes; projection screens; parts and accessories thereof:
9010.10.00.00 Apparatus and equipment for automatically developing photographic (including cinematographic) film or paper in rolls or for automatically exposing developed film to rolls of photographic paper
kg
2.4%
9010.50 Other apparatus and equipment for photographic (including cinematographic) laboratories; negatoscopes:
9010.50.10.00 Contact printers
No.
Free
9010.50.20.00 Developing tanks
No.
Free
Photographic film viewers, titlers, splicers and editors, all the foregoing and combinations thereof:
Articles containing an optical lens or designed to contain such a lens:
9010.50.30.00 Editors and combination editor-splicers, for cinematographic film
No.
Free
9010.50.40.00 Other
kg
Free
9010.50.50.00 Other
kg
Free
9010.50.60.00 Other
kg
Free
9010.60.00.00 Projection screens
No.
Free
9010.90 Parts and accessories:
9010.90.85.00 Parts and accessories of articles of subheadings 9010.50 and 9010.60
kg
Free
9010.90.95.00 Other
kg
2.9%
9011 Compound optical microscopes, including those for photomicrography, cinemicrography or microprojection; parts and accessories thereof:
9011.10 Stereoscopic microscopes:
9011.10.40.00 Provided with a means for photographing the image
No.
Free
9011.10.80.00 Other
No.
Free
9011.20 Other microscopes, for photomicrography, cinemicrography or microprojection:
9011.20.40.00 Provided with a means for photographing the image
No.
3.9%
9011.20.80.00 Other
No.
7.2%
9011.80.00.00 Other microscopes
No.
Free
9011.90.00.00 Parts and accessories
kg
Free
9012 Microscopes other than optical microscopes; diffraction apparatus; parts and accessories thereof:
9012.10.00.00 Microscopes other than optical microscopes; diffraction apparatus
No.
Free
9012.90.00.00 Parts and accessories
kg
Free
9013 Lasers, other than laser diodes; other optical appliances and instruments, not specified or included elsewhere in this chapter:
9013.10 Telescopic sights for fitting to arms; periscopes; telescopes designed to form parts of machines, appliances, instruments or apparatus of this chapter or section XVI:
Telescopic sights for rifles:
9013.10.10.00 Not designed for use with infrared light
No.
14.9%
9013.10.30.00 Other
No.
1.4%
Other:
9013.10.45.00 Telescopes designed to form parts of machines, appliances, instruments or apparatus of this chapter of section XVI
No.
Free
9013.10.50.00 Other
No.
5.3%
9013.20.00.00 Lasers, other than laser diodes
No.
Free
9013.80 Other devices, appliances and instruments:
9013.80.20.00 Hand magnifiers, magnifying glasses, loupes, thread counters and similar apparatus
No.
6.6%
9013.80.40.00 Door viewers (door eyes)
No.
5.8%
9013.80.91.00 Other
No.
4.5%
9013.90 Parts and accessories:
9013.90.20.00 Of telescopic sights for rifles
No.
16%
Other:
9013.90.70.00 Other parts and accessories, other than for telescopic sights for fitting to arms or for periscopes
No.
Free
9013.90.80.00 Other
No.
4.5%
9014 Direction finding compasses; other navigational instruments and appliances; parts and accessories thereof:
9014.10 Direction finding compasses:
9014.10.10.00 Optical instruments
No.
Free
Other:
9014.10.60.00 Gyroscopic compasses, other than electrical
No.
Free
Other:
9014.10.70 Electrical
Free
9014.10.70.30 Gyroscopic compasses
No.
9014.10.70.60 Other
No.
9014.10.90.00 Other
No.
Free
9014.20 Instruments and appliances for aeronautical or space navigation (other than compasses):
9014.20.20.00 Optical instruments and appliances
No.
Free
Other:
9014.20.40.00 Automatic pilots
No.
Free
Other:
9014.20.60.00 Electrical
No.
Free
9014.20.80 Other
Free
9014.20.80.40 For use in civil aircraft
No.
9014.20.80.80 Other
No.
9014.80 Other instruments and appliances:
9014.80.10.00 Optical instruments
No.
Free
Other:
9014.80.20.00 Ships' logs and depth-sounding apparatus
No.
Free
Other:
9014.80.40.00 Electrical
No.
Free
9014.80.50.00 Other
No.
Free
9014.90 Parts and accessories:
9014.90.10.00 Of articles covered by subheading 9014.20.40
kg
Free
9014.90.20 Of articles covered by subheading 9014.20.80
Free
9014.90.20.40 For use in civil aircraft
No.
9014.90.20.80 Other
No.
9014.90.40.00 Of articles covered by subheading 9014.80.50
kg
Free
9014.90.60.00 Other
kg
Free
9015 Surveying (including photogrammetrical surveying), hydrographic, oceanographic, hydrological, meteorological or geophysical instruments and appliances, excluding compasses; rangefinders; parts and accessories thereof:
9015.10 Rangefinders:
9015.10.40.00 Electrical
No.
Free
9015.10.80.00 Other
No.
Free
9015.20 Theodolites and tachymeters (tacheometers):
9015.20.40.00 Electrical
No.
Free
9015.20.80.00 Other
No.
Free
9015.30 Levels:
9015.30.40.00 Electrical
No.
Free
9015.30.80.00 Other
No.
2.8%
9015.40 Photogrammetrical surveying instruments and appliances:
9015.40.40.00 Electrical
No.
Free
9015.40.80.00 Other
No.
Free
9015.80 Other instruments and appliances:
9015.80.20.00 Optical instruments and appliances
No.
Free
Other:
9015.80.60.00 Seismographs
No.
Free
9015.80.80 Other
Free
9015.80.80.40 Geophysical instruments and appliances
No.
9015.80.80.80 Other
kg
9015.90.01 Parts and accessories
Free
9015.90.01.10 Of rangefinders
kg
9015.90.01.20 Of theodolites and tachymeters
kg
9015.90.01.30 Of levels
kg
9015.90.01.40 Of photogrammetrical surveying instruments and apparatus
kg
9015.90.01.50 Of seismographs
kg
9015.90.01.60 Of other geophysical instruments and appliances
kg
9015.90.01.90 Other
kg
9016.00 Balances of a sensitivity of 5 cg or better, with or without weights; parts and accessories thereof:
9016.00.20.00 Electrical balances and parts and accessories thereof
kg
3.9%
Other:
9016.00.40.00 Jewelers' balances and parts and accessories thereof
kg
2.9%
9016.00.60.00 Other
kg
3.3%
9017 Drawing, marking-out or mathematical calculating instruments (for example, drafting machines, pantographs, protractors, drawing sets, slide rules, disc calculators); instruments for measuring length, for use in the hand (for example, measuring rods and tapes, micrometers, calipers), not specified or included elsewhere in this chapter; parts and accessories thereof:
9017.10 Drafting tables and machines, whether or not automatic:
9017.10.40.00 Plotters
No.
Free
9017.10.80.00 Other
No.
3.9%
9017.20 Other drawing, marking-out or mathematical calculating instruments:
9017.20.40.00 Disc calculators, slide rules and other mathematical calculating instruments
No.
3.9%
9017.20.70.00 Plotters
No.
Free
9017.20.80 Other
4.6%
9017.20.80.40 Hand operated input devices which transmit position data to computer processors or displays (digitizers)
No.
9017.20.80.80 Other
kg
9017.30 Micrometers, calipers and gauges:
9017.30.40.00 Micrometers and calipers
No.
5.8%
9017.30.80.00 Other
No.
3.9%
9017.80.00.00 Other instruments
No.
5.3%
9017.90.01 Parts and accessories
The rate applicable to the article of which it is a part or accessory
9017.90.01.05 Of articles of subheading 9017.10.40
kg
9017.90.01.15 Of articles of subheading 9017.10.80
kg
9017.90.01.20 Of articles of subheading 9017.20.40
kg
9017.90.01.32 Of articles of subheading 9017.20.70
kg
9017.90.01.36 Of articles of subheading 9017.20.80
kg
9017.90.01.40 Of articles of subheading 9017.30.40
kg
9017.90.01.50 Of articles of subheading 9017.30.80
kg
9017.90.01.60 Other
kg
9018 Instruments and appliances used in medical, surgical, dental or veterinary sciences, including scintigraphic apparatus, other electro-medical apparatus and sight-testing instruments; parts and accessories thereof:
Electro-diagnostic apparatus (including apparatus for functional exploratory examination or for checking physiological parameters); parts and accessories thereof:
9018.11 Electrocardiographs, and parts and accessories thereof:
9018.11.30.00 Electrocardiographs
No.
Free
9018.11.60.00 Printed circuit assemblies
No.
Free
9018.11.90.00 Other
No.
Free
9018.12.00.00 Ultrasonic scanning apparatus
No.
Free
9018.13.00.00 Magnetic resonance imaging apparatus
No.
Free
9018.14.00.00 Scintigraphic apparatus
No.
Free
9018.19 Other:
9018.19.40.00 Apparatus for functional exploratory examination, and parts and accessories thereof
No.
Free
Other:
9018.19.55.00 Patient monitoring systems
No.
Free
9018.19.75.00 Printed circuit assemblies for parameter acquisition modules
No.
Free
9018.19.95 Other
Free
9018.19.95.30 Basal metabolism and blood pressure apparatus
No.
9018.19.95.35 Electroencephalographs (EEG) and electromyographs (EMG)
No.
9018.19.95.50 Other apparatus
No.
9018.19.95.60 Parts and accessories
No.
9018.20.00 Ultraviolet or infrared ray apparatus, and parts and accessories thereof
Free
9018.20.00.40 Therapeutic
No.
9018.20.00.80 Other
No.
Syringes, needles, catheters, cannulae and the like; parts and accessories thereof:
9018.31.00 Syringes, with or without needles; parts and accessories thereof
Free
Syringes, with or without their needles:
9018.31.00.40 Hypodermic
No.
9018.31.00.80 Other
No.
9018.31.00.90 Parts and accessories
No.
9018.32.00.00 Tubular metal needles and needles for sutures and parts and accessories thereof
No.
Free
9018.39.00 Other
Free
Bougies, catheters, drains and sondes, and parts and accessories thereof:
9018.39.00.20 Rubber catheters
doz.
9018.39.00.40 Other
No.
9018.39.00.50 Other
No.
Other instruments and appliances, used in dental sciences, and parts and accessories thereof:
9018.41.00.00 Dental drill engines, whether or not combined on a single base with other dental equipment, and parts and accessories thereof
No.
Free
9018.49 Other:
9018.49.40.00 Dental burs
gross
Free
9018.49.80 Other
Free
9018.49.80.40 Dental hand instruments and parts and accessories thereof
No.
9018.49.80.80 Other
No.
9018.50.00.00 Other ophthalmic instruments and appliances and parts and accessories thereof
No.
Free
9018.90 Other instruments and appliances and parts and accessories thereof:
Optical instruments and appliances and parts and accessories thereof:
9018.90.10.00 Mirrors and reflectors
No.
Free
9018.90.20.00 Other
No.
Free
Other:
9018.90.30.00 Anesthetic instruments and appliances and parts and accessories thereof
No.
Free
9018.90.40.00 Percussion hammers, stethoscopes and parts of stethoscopes
No.
Free
9018.90.50 Sphygmomanometers, tensimeters and oscillometers; all the foregoing and parts and accessories thereof
Free
9018.90.50.40 Sphygmomanometers and parts and accessories thereof
No.
9018.90.50.80 Other
No.
Electro-medical instruments and appliances and parts and accessories thereof:
9018.90.60.00 Electro-surgical instruments and appliances, other than extracorporeal shock wave lithotripters; all the foregoing and parts and accessories thereof
No.
Free
Other:
9018.90.64.00 Defibrillators
No.
Free
9018.90.68.00 Printed circuit assemblies for the defibrillators of subheading 9018.90.64
No.
Free
9018.90.75 Other
Free
9018.90.75.20 Dialysis instruments and apparatus
No.
Other therapeutic appliances and instruments:
9018.90.75.40 Ultrasonic
No.
9018.90.75.60 Other
No.
9018.90.75.70 Parts and accessories of dialysis instruments and apparatus
No.
9018.90.75.80 Other
No.
9018.90.80.00 Other
No.
Free
9019 Mechano-therapy appliances; massage apparatus; psychological aptitude-testing apparatus; ozone therapy, oxygen therapy, aerosol therapy, artificial respiration or other therapeutic respiration apparatus; parts and accessories thereof:
9019.10 Mechano-therapy appliances; massage apparatus; psychological aptitude-testing apparatus; parts and accessories thereof:
9019.10.20 Mechano-therapy appliances and massage apparatus; parts and accessories thereof
Free
9019.10.20.10 Mechano-therapy appliances
No.
Massage apparatus:
Electrically operated:
Battery powered:
9019.10.20.20 Handheld
No.
9019.10.20.30 Other
No.
Other:
9019.10.20.35 Powered by AC adapter
No.
9019.10.20.45 Other
No.
9019.10.20.50 Other
No.
9019.10.20.90 Parts and accessories
No.
Other:
9019.10.40.00 Electrically operated apparatus and parts thereof
No.
Free
9019.10.60.00 Other
No.
Free
9019.20.00.00 Ozone therapy, oxygen therapy, aerosol therapy, artificial respiration or other therapeutic respiration apparatus; parts and accessories thereof
No.
Free
9020.00 Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters; parts and accessories thereof:
9020.00.40.00 Underwater breathing devices designed as a complete unit to be carried on the person and not requiring attendants
No.
Free
9020.00.60.00 Other breathing appliances and gas masks
No.
2.5%
9020.00.90.00 Other
kg
2.5%
9021 Orthopedic appliances, including crutches, surgical belts and trusses; splints and other fracture appliances; artificial parts of the body; hearing aids and other appliances which are worn or carried, or implanted in the body, to compensate for a defect or disability; parts and accessories thereof:
9021.10.00 Orthopedic or fracture appliances, and parts and accessories thereof
Free
9021.10.00.50 Bone plates, screws and nails, and other internal fixation devices or appliances
No.
9021.10.00.90 Other
No.
Artificial teeth and dental fittings, and parts and accessories thereof:
9021.21 Artificial teeth and parts and accessories thereof:
9021.21.40.00 Of plastics
No.
Free
9021.21.80.00 Other
No.
Free
9021.29 Other:
9021.29.40.00 Of plastics
No.
Free
9021.29.80.00 Other
No.
Free
Other artificial parts of the body and parts and accessories thereof:
9021.31.00.00 Artificial joints and parts and accessories thereof
No.
Free
9021.39.00.00 Other
No.
Free
9021.40.00.00 Hearing aids, excluding parts and accessories thereof
No.
Free
9021.50.00.00 Pacemakers for stimulating heart muscles, excluding parts and accessories thereof
No.
Free
9021.90 Other:
9021.90.40 Parts and accessories for hearing aids and for pacemakers for stimulating heart muscles
Free
9021.90.40.40 For hearing aids
No.
9021.90.40.80 Other
No.
9021.90.81.00 Other
No.
Free
9022 Apparatus based on the use of X-rays or of alpha, beta, gamma or other ionizing radiations, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus, X-ray tubes and other X-ray generators, high tension generators, control panels and desks, screens, examination or treatment tables, chairs and the like; parts and accessories thereof:
Apparatus based on the use of X-rays, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus:
9022.12.00.00 Computed tomography apparatus
No.
Free
9022.13.00.00 Other, for dental uses
No.
Free
9022.14.00.00 Other, for medical, surgical or veterinary uses
No.
Free
9022.19.00.00 For other uses
No.
Free
Apparatus based on the use of alpha, beta, gamma or other ionizing radiations, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus:
9022.21.00.00 For medical, surgical, dental or veterinary uses
No.
Free
9022.29 For other uses:
9022.29.40.00 Smoke detectors, ionization type
No.
Free
9022.29.80.00 Other
No.
Free
9022.30.00.00 X-ray tubes
No.
Free
9022.90 Other, including parts and accessories:
9022.90.05.00 Radiation generator units
No.
0.8%
9022.90.15.00 Radiation beam delivery units
No.
1.4%
Other:
9022.90.25.00 Other apparatus
No.
0.8%
Parts and accessories:
9022.90.40.00 Of X-ray tubes
No.
0.9%
Other:
9022.90.60.00 Of apparatus based on the use of X-rays
No.
Free
9022.90.70.00 Of smoke detectors, ionization type
No.
1%
9022.90.95.00 Other
No.
1.4%
9023.00.00.00 Instruments, apparatus and models, designed for demonstrational purposes (for example, in education or exhibitions), unsuitable for other uses, and parts and accessories thereof
kg
Free
9024 Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof:
9024.10.00.00 Machines and appliances for testing metals
No.
Free
9024.80.00.00 Other machines and appliances
No.
Free
9024.90.00 Parts and accessories
Free
9024.90.00.40 Of machines and appliances for testing metals
kg
9024.90.00.80 Other
kg
9025 Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments; parts and accessories thereof:
Thermometers and pyrometers, not combined with other instruments:
9025.11 Liquid-filled, for direct reading:
9025.11.20.00 Clinical
No.
Free
9025.11.40.00 Other
No.
Free
9025.19 Other:
9025.19.40.00 Pyrometers
No.
Free
9025.19.80 Other
Free
Clinical
9025.19.80.10 Infrared thermometers of a kind described in statistical note 2 of this chapter
No.
9025.19.80.20 Other
No.
Other
9025.19.80.60 Infrared thermometers
No.
9025.19.80.85 Other
No.
9025.80 Other instruments:
9025.80.10.00 Electrical
No.
1.7%
Other:
9025.80.15.00 Barometers, not combined with other instruments
No.
1%
9025.80.20.00 Hydrometers and similar floating instruments, whether or not incorporating a thermometer, non-recording
No.
2.9%
9025.80.35.00 Hygrometers and psychrometers, non-recording
No.
1.4%
9025.80.40.00 Thermographs, barographs, hygrographs and other recording instruments
No.
1%
9025.80.50.00 Other
No.
1.6%
9025.90.06.00 Parts and accessories
kg
Free
9026 Instruments and apparatus for measuring or checking the flow, level, pressure or other variables of liquids or gases (for example, flow meters, level gauges, manometers, heat meters), excluding instruments and apparatus of heading 9014, 9015, 9028 or 9032; parts and accessories thereof:
9026.10 For measuring or checking the flow or level of liquids:
9026.10.20 Electrical
Free
9026.10.20.40 Flow meters
No.
9026.10.20.80 Other
No.
Other:
9026.10.40.00 Flow meters
No.
Free
9026.10.60.00 Other
No.
Free
9026.20 For measuring or checking pressure:
9026.20.40.00 Electrical
No.
Free
9026.20.80.00 Other
No.
Free
9026.80 Other instruments and apparatus:
9026.80.20.00 Electrical
No.
Free
Other:
9026.80.40.00 Heat meters incorporating liquid supply meters, and anemometers
No.
Free
9026.80.60.00 Other
No.
Free
9026.90 Parts and accessories:
9026.90.20.00 Of electrical instruments and apparatus
kg
Free
Other:
9026.90.40.00 Of flow meters, heat meters incorporating liquid supply meters and anemometers
kg
Free
9026.90.60.00 Other
kg
Free
9027 Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes; parts and accessories thereof:
9027.10 Gas or smoke analysis apparatus:
9027.10.20.00 Electrical
kg
Free
Other:
9027.10.40.00 Optical instruments and apparatus
kg
Free
9027.10.60.00 Other
kg
Free
9027.20 Chromatographs and electrophoresis instruments:
9027.20.50 Electrical
Free
9027.20.50.30 Electrophoresis instruments
No.
9027.20.50.50 Gas chromatographs
No.
9027.20.50.60 Liquid chromatographs
No.
9027.20.50.80 Other
No.
9027.20.80 Other
Free
9027.20.80.30 Gas chromatographs
No.
9027.20.80.60 Liquid chromatographs
No.
9027.20.80.90 Other
No.
9027.30 Spectrometers, spectrophotometers and spectrographs using optical radiations (ultraviolet, visible, infrared):
9027.30.40 Electrical
Free
9027.30.40.40 Spectrophotometers
No.
9027.30.40.80 Other
No.
9027.30.80 Other
Free
9027.30.80.20 Spectroscopes
No.
9027.30.80.80 Other
No.
9027.50 Other instruments and apparatus using optical radiations (ultraviolet, visible, infrared):
9027.50.10.00 Exposure meters
No.
1.2%
Other:
9027.50.40 Electrical
Free
9027.50.40.15 Chemical analysis instruments and apparatus
No.
9027.50.40.20 Thermal analysis instruments and apparatus
No.
9027.50.40.50 Photometers
No.
9027.50.40.60 Other
No.
9027.50.80 Other
Free
9027.50.80.15 Chemical analysis instruments and apparatus
No.
9027.50.80.20 Thermal analysis instruments and apparatus
No.
9027.50.80.60 Other
No.
Other instruments and apparatus:
9027.81.00.00 Mass spectrometers
No.
Free
9027.89 Other:
9027.89.25.00 Nuclear magnetic resonance instruments
No.
Free
Other:
9027.89.45 Electrical
Free
9027.89.45.30 Chemical analysis instruments and apparatus
kg
9027.89.45.60 Physical analysis instruments and apparatus
kg
9027.89.45.90 Other
kg
9027.89.80 Other
Free
9027.89.80.30 Chemical analysis instruments and apparatus
kg
9027.89.80.60 Physical analysis instruments and apparatus
kg
9027.89.80.90 Other
kg
9027.90 Microtomes; parts and accessories:
9027.90.20.00 Microtomes
No.
Free
Parts and accessories:
Of electrical instruments and apparatus:
9027.90.45.00 Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89
No.
Free
Other:
9027.90.54.00 Of electrophoresis instruments not incorporating an optical or other measuring device
kg
Free
9027.90.56 Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
Free
9027.90.56.25 Of articles of subheading 9027.20.50
kg
9027.90.56.30 Of articles of subheading 9027.30.40
kg
9027.90.56.40 Of articles of subheading 9027.50.10
kg
9027.90.56.50 Of articles of subheading 9027.50.40
kg
9027.90.56.95 Other
kg
9027.90.59 Other
Free
9027.90.59.10 Of articles of subheading 9027.10.20
kg
9027.90.59.95 Other
kg
Other:
Of optical instruments and apparatus:
9027.90.64.00 Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
kg
Free
9027.90.68.00 Other
kg
Free
Other:
9027.90.84.00 Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
kg
Free
9027.90.88.00 Other
kg
Free
9028 Gas, liquid or electricity supply or production meters, including calibrating meters thereof; parts and accessories thereof:
9028.10.00.00 Gas meters
No.
16¢ each + 2.5%
9028.20.00.00 Liquid meters
No.
16¢ each + 2.5%
9028.30.00.00 Electricity meters
No.
Free
9028.90.00 Parts and accessories
Free
9028.90.00.40 Of electricity meters
kg
9028.90.00.80 Other
kg
9029 Revolution counters, production counters, taximeters, odometers, pedometers and the like; speedometers and tachometers, other than those of heading 9014 or 9015; stroboscopes; parts and accessories thereof:
9029.10 Revolution counters, production counters, taximeters, odometers, pedometers and the like:
9029.10.40.00 Taximeters
No.
5.3%
9029.10.80.00 Other
No.
Free
9029.20 Speedometers and tachometers; stroboscopes:
9029.20.20.00 Bicycle speedometers
No.
6%
9029.20.40 Other speedometers and tachometers
Free
9029.20.40.40 For use in civil aircraft
No.
9029.20.40.80 Other
No.
9029.20.60.00 Stroboscopes
No.
16¢ each + 2.5%
9029.90 Parts and accessories:
9029.90.20.00 Of taximeters
kg
5.3%
9029.90.40.00 Of bicycle speedometers
kg
6%
9029.90.60.00 Of stroboscopes
kg
3.2%
9029.90.80 Other
Free
9029.90.80.40 Of speedometers and tachometers
kg
9029.90.80.80 Other
kg
9030 Oscilloscopes, spectrum analyzers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionizing radiations; parts and accessories thereof:​
9030.10.00.00 Instruments and apparatus for measuring or detecting ionizing radiations
No.
Free
9030.20 Oscilloscopes and oscillographs:
9030.20.05.00 Specially designed for telecommunications
No.
Free
9030.20.10.00 Other oscilloscopes and oscillographs
No.
Free
Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices):
9030.31.00.00 Multimeters, without a recording device
No.
Free
9030.32.00.00 Multimeters, with a recording device
No.
Free
9030.33 Other, without a recording device:
9030.33.34.00 Resistance measuring instruments
No.
1.7%
9030.33.38.00 Other
No.
Free
9030.39.01.00 Other, with a recording device
No.
Free
9030.40.00.00 Other instruments and apparatus, specially designed for telecommunications (for example, cross-talk meters, gain measuring instruments, distortion factor meters, psophometers)
No.
Free
Other instruments and apparatus:
9030.82.00.00 For measuring or checking semiconductor wafers or devices (including integrated circuits)
No.
Free
9030.84.00.00 Other, with a recording device
No.
Free
9030.89.01.00 Other
No.
Free
9030.90 Parts and accessories:
For articles of subheading 9030.10:
9030.90.25.00 Printed circuit assemblies
No.
Free
9030.90.46.00 Other
kg
Free
Other:
Printed circuit assemblies:
9030.90.66.00 Of instruments and apparatus of subheading 9030.40 or 9030.82
No.
Free
9030.90.68.00 Other
No.
Free
Other:
9030.90.84.00 Of instruments and apparatus of subheading 9030.82
kg
Free
9030.90.89 Other
Free
9030.90.89.11 Of articles of subheading 9030.20
kg
9030.90.89.21 Of articles of subheading 9030.31
kg
9030.90.89.22 Of articles of subheading 9030.32
kg
9030.90.89.23 Of articles of subheading 9030.33
kg
9030.90.89.31 Of articles of subheading 9030.39
kg
9030.90.89.40 Of articles of subheading 9030.40
kg
9030.90.89.56 Of articles of subheading 9030.84
kg
9030.90.89.61 Other
kg
9031 Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof:
9031.10.00.00 Machines for balancing mechanical parts
No.
Free
9031.20.00.00 Test benches
No.
1.7%
Other optical instruments and appliances:
9031.41.00 For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits)
Free
9031.41.00.20 For inspecting photomasks or reticles used in manufacturing semiconductor devices
No.
For inspecting semiconductor wafers or devices:
9031.41.00.40 For wafers
No.
9031.41.00.60 Other
No.
9031.49 Other:
9031.49.10.00 Profile projectors
No.
Free
9031.49.40.00 Coordinate-measuring machines
No.
Free
9031.49.70.00 For inspecting masks (other than photomasks) used in manufacturing semiconductor devices; for measuring surface particulate contamination on semiconductor devices
No.
Free
9031.49.90.00 Other
No.
Free
9031.80 Other instruments, appliances and machines:
9031.80.40.00 Electron beam microscopes fitted with equipment specifically designed for the handling and transport of semiconductor wafers or reticles
No.
Free
9031.80.80 Other
Free
Equipment for testing the characteristics of internal combustion engines:
9031.80.80.60 For testing electrical characteristics
kg
9031.80.80.70 Other
kg
9031.80.80.85 Other
kg
9031.90 Parts and accessories:
9031.90.21.00 Of profile projectors
kg
Free
Of other optical instruments and appliances, other than test benches:
9031.90.45.00 Bases and frames for the coordinate-measuring machines of subheading 9031.49.40
kg
Free
9031.90.54.00 Of optical instruments and appliances of subheading 9031.41 or 9031.49.70
kg
Free
9031.90.59.00 Other
kg
Free
Other:
9031.90.70.00 Of articles of subheading 9031.80.40
kg
Free
9031.90.91 Other
Free
9031.90.91.30 Of machines for balancing mechanical parts
kg
9031.90.91.60 Of test benches
kg
9031.90.91.95 Other
kg
9032 Automatic regulating or controlling instruments and apparatus; parts and accessories thereof:
9032.10.00 Thermostats
1.7%
For air conditioning, refrigeration or heating systems:
9032.10.00.30 Designed for wall mounting
No.
9032.10.00.60 Other
No.
9032.10.00.90 Other
No.
9032.20.00.00 Manostats
No.
Free
Other instruments and apparatus:
9032.81.00 Hydraulic and pneumatic
Free
Industrial process control instruments and apparatus:
9032.81.00.20 Hydraulic
No.
9032.81.00.60 Pneumatic
No.
9032.81.00.80 Other
No.
9032.89 Other:
Automatic voltage and voltage-current regulators:
9032.89.20.00 Designed for use in a 6, 12 or 24 V system
No.
1.1%
9032.89.40.00 Other
No.
1.7%
9032.89.60 Other
1.7%
Control instruments for air conditioning, refrigeration or heating systems:
9032.89.60.15 Complete systems
No.
9032.89.60.25 Other
No.
Process control instruments and apparatus:
9032.89.60.30 Complete systems
No.
Other:
9032.89.60.40 Temperature control instruments
No.
9032.89.60.50 Pressure and draft control instruments
No.
9032.89.60.60 Flow and liquid level control instruments
No.
9032.89.60.70 Humidity control instruments
No.
9032.89.60.75 Other
kg
9032.89.60.85 Other
kg
9032.90 Parts and accessories:
Of automatic voltage and voltage-current regulators:
9032.90.21.00 Designed for use in a 6, 12 or 24 V system
kg
1.1%
9032.90.41.00 Other
kg
1.7%
9032.90.61 Other
1.7%
9032.90.61.20 Of thermostats
kg
9032.90.61.40 Of manostats
kg
9032.90.61.60 Of instruments and apparatus of subheading 9032.81
kg
9032.90.61.80 Other
kg
9033.00 Parts and accessories (not specified or included elsewhere in this chapter) for machines, appliances, instruments or apparatus of chapter 90:
9033.00.20.00 Light-emitting diode (LED) backlights modules, the foregoing which are lighting sources that consist of one or more LEDs and one or more connectors and are mounted on a printed circuit or other similar substrate, and other passive components, whether or not combined with optical components or protective diodes, and used as backlights illumination for liquid crystal displays (LCDs)
No.
Free
9033.00.30.00 Touch-sensitive data input devices (so-called “touch screens”) without display capabilities, for incorporation into apparatus having a display, which function by detecting the presence and location of a touch within the display area (such sensing may be obtained by means of resistance, electrostatic capacity, acoustic pulse recognition, infrared lights or other touch-sensitive technology)
No.
Free
9033.00.90.00 Other
kg
4.4%

Frequently Asked Questions

What does HTS Chapter 90 cover? ▼
HTS Chapter 90 covers Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof. It contains 671 individual tariff classifications, of which 302 have specified duty rates. This chapter falls under Section XVIII (Optical, Photographic, Measuring, Medical Instruments).
What is the average tariff rate for Chapter 90? ▼
The average general (MFN) duty rate across all tariff lines in Chapter 90 is 1.0%. The highest individual rate in this chapter is 16%. Actual duty on a specific product depends on its precise HTS classification.
How do I find the correct HTS code for my product? ▼
Browse the tariff lines listed below organized by heading and subheading. Each item with an HTS number links to its full detail page showing general, special, and Column 2 duty rates. For complex classifications, consult a licensed customs broker or contact US Customs and Border Protection (CBP).
Are there any duty-free items in Chapter 90? ▼
Yes, many chapters contain items with a "Free" general rate, meaning no duty is assessed for imports from most-favored-nation countries. Look for items marked "Free" in the tariff lines table below. Additional preferential rates may also apply under free trade agreements.
Where does PlainTariff get its tariff data? ▼
All tariff data comes from the U.S. International Trade Commission (USITC) Harmonized Tariff Schedule (HTS) 2026 Basic Edition, the official schedule of US import duties.

Learn More About Tariffs

📖

How Tariffs Work

A plain-language guide to US import duties

 🔍

Reading HTS Codes

How to decode the Harmonized Tariff Schedule

 📊

Most Tariffed Products

Which US imports carry the highest duties

 💰

Tariffs & Consumer Prices

How import duties affect what you pay

Next steps

Find the exact rate for your product within Chapter 90.

The chapter average is an orientation only, duty is set per tariff line, and Special preferential rates may apply to qualifying origins.

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Sources: U.S. International Trade Commission Harmonized Tariff Schedule (2026 Basic Edition) and FAO FAOSTAT Trade: Crops and Livestock. See our methodology for how figures are computed.

Every figure on PlainTariff is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.