HS Code for Fastener
Threaded and non-threaded steel fasteners are classified under HTS heading 7318, which covers screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, washers and similar articles of iron or steel. The heading splits first into threaded articles (7318.11–7318.19) and non-threaded articles (7318.21–7318.29). The specific subheading depends on the fastener type — bolts, machine screws, self-tapping screws, wood screws, nuts, washers or rivets — and general rates range from duty-free to about 12.5%.
| HTS Code | Description | Duty Rate |
|---|---|---|
| 7318.15.20.46 | Bolts and bolts with their nuts or washers, of iron or steel — other Steel bolts (certain breakouts duty-free) | Free |
| 7318.15.60.80 | Other screws and bolts, of iron or steel — other Cap screws / machine screws and bolts | 6.2% |
| 7318.15.80.85 | Other screws and bolts, of iron or steel — other (further breakout) Other steel screws and bolts | 8.5% |
| 7318.15.40.00 | Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter, of iron or steel Larger machine screws | Free |
| 7318.14.10.60 | Self-tapping screws, of iron or steel — other Self-tapping screws | 6.2% |
| 7318.14.50.80 | Self-tapping screws, of iron or steel — other (further breakout) Other self-tapping screws | 8.6% |
| 7318.12.00.00 | Other wood screws, of iron or steel Wood screws | 12.5% |
| 7318.16.00.45 | Nuts, of iron or steel — other Steel nuts | Free |
| 7318.22.00.00 | Other washers, of iron or steel Flat and spring washers | Free |
| 7318.23.00.00 | Rivets, of iron or steel Steel rivets | Free |
Steel fasteners are associated with heading 7318 of the Harmonized Tariff Schedule, which is one of the more detailed provisions for hardware. The first division is between threaded articles (subheadings 7318.11 through 7318.19) and non-threaded articles (7318.21 through 7318.29).
Among threaded fasteners, bolts and bolts with their nuts or washers point toward 7318.15, as do most cap screws and machine screws, with several statistical breakouts that carry different rates — some are duty-free while others run around 6.2% to 8.5%. Self-tapping screws have their own subheading at 7318.14, wood screws (other than coach screws) at 7318.12, coach screws at 7318.11, and nuts at 7318.16. Threaded items not covered by the more specific lines fall to 7318.19.
Among non-threaded fasteners, washers — both flat and spring — point toward 7318.21 and 7318.22, rivets toward 7318.23, and cotters and cotter pins toward 7318.24. Many of these non-threaded items are duty-free.
Because the breakouts within 7318.15 carry materially different rates, it is worth reviewing the precise fastener type, dimensions and head/thread style against the statistical notes. A useful related distinction: this heading is for iron or steel fasteners. Fasteners of other metals (such as aluminum or copper) are provided for under their own base-metal chapters, and non-metal fasteners such as plastic cable ties point toward heading 3926 rather than 7318.
Duty rates for steel fasteners under heading 7318 range from free to about 12.5%. Many bolts, nuts, washers and rivets are duty-free, while certain screw and bolt breakouts run around 6.2% to 8.6%, and wood screws are around 12.5%. Preferential rates under free trade agreements may reduce or eliminate these duties for qualifying origins. Because rates vary by the specific statistical breakout within a subheading, the precise fastener type and specification drive the duty owed. Some steel fasteners may also be subject to separate trade-remedy measures depending on origin, which is worth reviewing alongside the regular rate.