Key facts
- HS subheading
- 7318.21
- Duty (MFN)
- 5.8%
- National lines
- 2
- Tariff
- United States
- Chapter
- 73: Articles of iron or steel
Summary
The United States tariff splits HS 7318.21 (non-threaded articles: Spring washers and other lock washers) into 2 national lines: 7318.21.00.30 (helical spring lock washers) and 7318.21.00.90 (other). The general (MFN) duty is 5.8% on all 2 lines.
United States lines under 7318.21
The United States tariff splits HS 7318.21 (non-threaded articles: Spring washers and other lock washers) into 2 national lines: 7318.21.00.30 (helical spring lock washers) and 7318.21.00.90 (other).
The general (MFN) duty is 5.8% on all 2 lines.
- 7318.21.00.30Helical spring lock washersDuty: 5.8%
- 7318.21.00.90OtherDuty: 5.8%
In other countries
No other national tariff on border.bot has live lines under 7318.21 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have under HS 7318.21?
The United States tariff splits HS 7318.21 (non-threaded articles: Spring washers and other lock washers) into 2 national lines: 7318.21.00.30 (helical spring lock washers) and 7318.21.00.90 (other).
What is the duty on HS 7318.21 in the United States?
The general (MFN) duty is 5.8% on all 2 lines.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: