# United States tariff lines under HS 8483.90 > The United States tariff splits HS 8483.90 (toothed wheels, chain sprockets and other transmission elements presented separately; parts) into 11 national lines: 8483.90.10.10 (forged), 8483.90.10.50 (other), 8483.90.20.00 (parts of flange, take-up, cartridge and hanger units), 8483.90.30.00 (other) and 7 others. Source: https://border.bot/countries/united-states/hs-codes/848390 Last updated: 9 October 2026 [Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8483.90](https://border.bot/countries/united-states/hs-codes/848390) ## Key facts - HS subheading: [8483.90](https://border.bot/hs-codes/848390) - National lines: 11 - Tariff: [United States](https://border.bot/countries/united-states) - Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof ## United States lines under 8483.90 The United States tariff splits HS 8483.90 (toothed wheels, chain sprockets and other transmission elements presented separately; parts) into 11 national lines: 8483.90.10.10 (forged), 8483.90.10.50 (other), 8483.90.20.00 (parts of flange, take-up, cartridge and hanger units), 8483.90.30.00 (other) and 7 others. - [8483.90.10.10](https://border.bot/countries/united-states/hs-codes/8483901010) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Chain sprockets and parts thereof, Forged. Duty (MFN): 2.8% - [8483.90.10.50](https://border.bot/countries/united-states/hs-codes/8483901050) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Chain sprockets and parts thereof, Other. Duty (MFN): 2.8% - [8483.90.20.00](https://border.bot/countries/united-states/hs-codes/8483902000) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Parts of bearing housings and plain shaft bearings, Parts of flange, take-up, cartridge and hanger units. Duty (MFN): 4.5% - [8483.90.30.00](https://border.bot/countries/united-states/hs-codes/8483903000) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Parts of bearing housings and plain shaft bearings, Other. Duty (MFN): 4.5% - [8483.90.50.10](https://border.bot/countries/united-states/hs-codes/8483905010) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Parts of gearing, gear boxes and other speed changers, Forged gear blanks. Duty (MFN): 2.5% - [8483.90.50.20](https://border.bot/countries/united-states/hs-codes/8483905020) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Parts of gearing, gear boxes and other speed changers, Parts of gear boxes and speed changers for wind turbines. Duty (MFN): 2.5% - [8483.90.50.80](https://border.bot/countries/united-states/hs-codes/8483905080) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Parts of gearing, gear boxes and other speed changers, Other. Duty (MFN): 2.5% - [8483.90.70.00](https://border.bot/countries/united-states/hs-codes/8483907000) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Other, Parts of articles of subheading 8483.20. Duty (MFN): 5.5% - [8483.90.80.10](https://border.bot/countries/united-states/hs-codes/8483908010) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Other, Other, Parts of articles of subheading 8483.60.80. Duty (MFN): 2.8% - [8483.90.80.40](https://border.bot/countries/united-states/hs-codes/8483908040) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Other, Other, Parts of universal joints. Duty (MFN): 2.8% - [8483.90.80.80](https://border.bot/countries/united-states/hs-codes/8483908080) Toothed wheels, chain sprockets and other transmission elements presented separately; parts, Other, Other, Other. Duty (MFN): 2.8% ## In other countries No other national tariff on border.bot has live lines under 8483.90 yet. - [The Harmonized System text for 8483.90](https://border.bot/hs-codes/848390) - Previous subheading: [8483.60](https://border.bot/countries/united-states/hs-codes/848360) Clutches and shaft couplings (including universal joints) - Next subheading: [8484.10](https://border.bot/countries/united-states/hs-codes/848410) Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals ## Frequently asked questions ### How many national tariff lines does the United States tariff have under HS 8483.90? The United States tariff splits HS 8483.90 (toothed wheels, chain sprockets and other transmission elements presented separately; parts) into 11 national lines: 8483.90.10.10 (forged), 8483.90.10.50 (other), 8483.90.20.00 (parts of flange, take-up, cartridge and hanger units), 8483.90.30.00 (other) and 7 others. ## Sources and updates The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. This page was last updated on 9 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Official source files: - https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false Machine-readable: https://border.bot/countries/united-states/hs-codes/848390.json