Analysis
Subheading 8483.60 covers clutches and shaft couplings (including universal joints), within heading 8483. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 2 US tariff lines below it are national.
None of its 2 lines is duty-free at the general rate. Rates run from 2.8% to 2.8% with a median of 2.8%, so the line you choose sets the duty.
The US splits it as follows: 8483.60.40 for clutches and universal joints (2.8%) and 8483.60.80 for clutches and shaft couplings (including universal joints): other (2.8%).
By Census's concordance, most of its statistical lines are made by Mechanical Power Transmission Equipment Manufacturing (333613). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 8483.60 once they fall within heading 8483 (transmission shafts (including camshafts and crankshafts) and cranks; bearing housings…). Under General Rule 6, subheadings are then compared only with others at the same level, so a product is matched against its siblings, not against lines elsewhere in the chapter.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 8483.60.40 | Clutches and universal joints | 2.8% |
| 8483.60.80 | Clutches and shaft couplings (including universal joints): other | 2.8% |