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)
Classification path
- Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel
- Threaded articles
- Other screws and bolts, whether or not with their nuts or washers
- Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws)
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 2.2¢/kg
- Unit of quantity
- kg
Related lines in heading 7318
- 7318.11.00.00Threaded articles / Coach screws12.5%
- 7318.12.00.00Threaded articles / Other wood screws12.5%
- 7318.13.00.30Having shanks or threads with a diameter of less than 6 mm5.7%
- 7318.13.00.60Having shanks or threads with a diameter of 6 mm or more5.7%
- 7318.14.10.30Having shanks or threads with a diameter of less than 6 mm / Of stainless steel6.2%
- 7318.14.10.60Having shanks or threads with a diameter of less than 6 mm / Other6.2%
- 7318.14.50.20Having shanks or threads with a diameter of 6 mm or more / Of stainless steel8.6%
- 7318.14.50.80Having shanks or threads with a diameter of 6 mm or more / Other8.6%
- 7318.15.20.10Having shanks or threads with a diameter of less than 6 mmFree
- 7318.15.20.20Having shanks or threads with a diameter of 6 mm or more / Track boltsFree
- 7318.15.20.30Having shanks or threads with a diameter of 6 mm or more / Structural boltsFree
- 7318.15.20.41Having shanks or threads with a diameter of 6 mm or more / Bent bolts / Right-angle anchor boltsFree
About heading 7318
Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel
Heading 7318 covers small iron and steel fasteners: screws, bolts, nuts, rivets, washers, cotter pins and similar articles. The heading splits first into threaded articles (7318.11 through 7318.19) and non-threaded articles (7318.21 through 7318.29). Threaded lines are further divided by article type, by shank or thread diameter above or below 6 mm, and in some cases by whether the goods are stainless steel or Other.
Full guide to heading 7318Products in this heading
- Coach screws
- Wood screws
- Self-tapping screws, stainless or other
- Socket screws and set screws
- Hex head bolts and cap screws
- Nuts, including lugnuts
- Helical spring lock washers
- Rivets and cotter pins
Frequently asked questions
What is the HTS code for wood screws?
Other wood screws are classified in 7318.12.00.00, at a general (MFN) rate of 12.5%.
What is the duty on stainless steel self-tapping screws under 6 mm?
Stainless steel self-tapping screws with shanks or threads under 6 mm fall in 7318.14.10.30, at a general (MFN) rate of 6.2%.
How do I classify spring lock washers?
Helical spring lock washers go in 7318.21.00.30, at a general (MFN) rate of 5.8%; other spring and lock washers go in 7318.21.00.90 at the same rate.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.