Tariff monitor · Metals & Mill Products
Steel fasteners: statutory & effective tariff rates
Statutory HTS duty rates for 17 steel fasteners tariff lines (MFN Free–12.5%), from USITC. Effective rate May 2026: 52.13%; monthly history since 2014.
Statutory rates from the schedule
- Screws, bolts, nuts, washers, rivets, and similar threaded and non-threaded fasteners of iron or steel. This family covers HTS heading 7318: 17 eight-digit rate lines with MFN (column 1, general) rates of Free–12.5% in the 2026 schedule.
- Chapter 99 flags on individual lines mark Section 301/232 overlay provisions (e.g. 9903.88.03) that apply on top of the MFN column.
What importers actually paid
- Latest month on record (2026-05): 52.13% effective on $468.0M of imports, versus 33.98% in the same month a year earlier. The monthly archive holds 149 observations from 2014-01 through 2026-05.
- In 2025, U.S. imports for consumption in this family totaled $6.0B in customs value and paid $2.2B in calculated duties: an effective tariff rate of 35.91%. The effective rate captures Section 301/232 overlays, exclusions, and special-program use that the statutory column cannot.
- A year earlier the effective rate was 6.49%, so the duty burden rose 29.4 points.
- Top source countries in 2025: Taiwan ($1.9B at 31.72%), China ($1.0B at 65.46%), Japan ($571.7M at 32.32%), Canada ($320.6M at 16.41%), Germany ($315.1M at 34.35%).
Representative rate lines
- 7318.11.00.00: Coach screws — MFN 12.5%
- 7318.12.00.00: Other wood screws — MFN 12.5%
- 7318.13.00: Screw hooks and screw rings — MFN 5.7%
- 7318.14.10: Having shanks or threads with a diameter of less than 6 mm — MFN 6.2%
- 7318.14.50: Having shanks or threads with a diameter of 6 mm or more — MFN 8.6%
- 7318.15.20: Bolts and bolts and their nuts or washers entered or exported in the same shipment — MFN Free
- 7318.15.40.00: Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter ( — MFN Free
- 7318.15.50: Studs — MFN Free
About this data
- Reference statistics derived from USITC published data. Not a customs ruling; verify rates with a licensed customs broker before relying on them.
Last reviewed 2026-05-12.