The USITC Harmonized Tariff Schedule lists these subheadings under heading 7318 (Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel:). Rates are the Column 1 general rates as served by hts.usitc.gov on 2026-10-02. Additional duties that depend on the country of origin sit in Chapter 99 and are not shown here.
| HTS no. | Description | General rate |
|---|---|---|
| 7318.11.00.00 | Coach screws | 12.5% |
| 7318.12.00.00 | Other wood screws | 12.5% |
| 7318.13.00 | Screw hooks and screw rings | 5.7% |
| 7318.14.10 | Having shanks or threads with a diameter of less than 6 mm | 6.2% |
| 7318.14.50 | Having shanks or threads with a diameter of 6 mm or more | 8.6% |
| 7318.15.20 | Bolts and bolts and their nuts or washers entered or exported in the same shipment | Free |
| 7318.15.40.00 | Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws) | Free |
| 7318.15.50 | Studs | Free |
| 7318.15.60 | Having shanks or threads with a diameter of less than 6 mm | 6.2% |
| 7318.15.80 | Having shanks or threads with a diameter of 6 mm or more | 8.5% |
| 7318.16.00 | Nuts | Free |
| 7318.19.00.00 | Other | 5.7% |
| 7318.21.00 | Spring washers and other lock washers | 5.8% |
| 7318.22.00.00 | Other washers | Free |
| 7318.23.00.00 | Rivets | Free |
Source: USITC Harmonized Tariff Schedule, retrieved 2026-10-02.
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