8483.40.50.10

10-digit statistical code

Fixed ratio speed changers

This is the specific 10-digit code used for customs filing. Enter it on your CBP entry summary (form 7501) or give it to your customs broker exactly as shown. Duty is 2.5% of the declared customs value for most countries.

Duty rates

Duty rates are legally set at the 8-digit level, so this code takes its rates from 8483.40.50. Ad valorem rate — a straight percentage of the declared customs value.

Duty rates for HTS 8483.40.50.10
Rate	Value and what it means
General rate (Column 1)	2.5%Column 1 general Applies to most trading partners — the standard "normal trade relations" rate.
Special rate (Column 1)	Free (A,AU,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. A — GSP — excluding certain countries AU — Australia FTA BH — Bahrain FTA CL — Chile FTA CO — Colombia TPA D — African Growth and Opportunity Act (AGOA) E — Caribbean Basin Initiative (CBI) IL — Israel FTA JO — Jordan FTA KR — Korea FTA (KORUS) MA — Morocco FTA OM — Oman FTA P — CAFTA-DR PA — Panama TPA PE — Peru TPA S — USMCA SG — Singapore FTA
Column 2 rate	27.5%Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it.
Unit of quantity	No. How CBP expects the quantity to be reported on the entry summary.

Estimate duty for this code

Where this sits in the schedule

The tariff schedule is read top-down: each line inherits the wording of the categories above it.

Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof: > Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters: > Gear boxes and other speed changers: > Fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation: > Other

Chapter 84: Machinery and Mechanical Appliances; Parts Thereof

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View Chapter 84

Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.

Data loaded August 18, 2026.Check this chapter on hts.usitc.gov Report an error with this code How this data is built