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HTS 7318.21.00Chapter 73

HTS 7318.21.00Spring washers and other lock washers Duty Rate & Import Guide

Articles of Iron or Steel · 1 pending regulation · 3 court cases · $6.4M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

5.8%

Special

Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 2.9% (JP)

Column 2

35%

Preferential Rates Available

Trade Agreement Eligibility

CUSMAKORUS

Notes

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Trade Intelligence

Monthly Imports

$6.4M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

MODERATE

7 rulings — · 1 reg · 2 CIT, 1 CAFC

Global Rates

🇺🇸 5.8%

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: Free · 🇧🇷 Brazil: 1 NCM code

Compare All →

Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, Federal Register, CourtListener, Regulations.gov, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-29 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Trade Remedy

Additional Tariffs Apply

Section 232 — Steel & Aluminum Tariffs+25%

Iron and steel articles

Active — 25% on steel, 25% on aluminum (aluminum raised from 10% to 25% effective March 12, 2025)

Effective 2018-03-23

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (3)

CodeDescriptionRate
7318.21.00Spring washers and other lock washers5.8%
7318.21.00.30Helical spring lock washers
7318.21.00.90Other

CBP Rulings (7)

954478Classification

Belleville Washers; Spring Washers; CIE 615/66; NY 858663; Item 646.70; 7318.22.00

957286Classification

Body housing, cover plate, plug, shaft, impeller, propeller, and bearing plate; housing cover thrust washer; locking rotor washer; oil pump parts; EN 73.13; spring washers and other lock washers;

956913Classification

Protest 1101-94-100421; disc springs; disc spring washers; HQs 954478, 955573; C.I.E. 615/66 and Suppl. #1; EN 73.18; EN 73.20; Hemscheidt Corp. v. U.S.; Thomas Equipment Ltd. v. U.S.; 19 U.S.C. 1315(d)

955573Classification

Protest 1101-93-100543; disc springs; disc spring washers; HQ 954478; C.I.E. 615/66 and Suppl. #1; EN 73.18; EN 73.20

G85230Classification

The tariff classification of various lamp parts.

H249811Classification

Revocation of NY N050746; Tariff classification of spare parts/repair kit

H326279Classification

Protest and Application for Further Review No 4501-21-103251; Classification of Educational Robot Kit Parts

Federal Register (1)

Court of International Trade & Federal Circuit (3)

Regulatory Dockets (3)

USTR regulatory documents related to this tariff code from Regulations.gov.

Source: Regulations.gov

Matching Export Code (Schedule B)

7318210000Schedule B

SPRING WASHERS AND OTHER LOCK WASHERS, IRON OR STEEL

Census Bureau export classification matching this HTS import code.

7318.19.00.007318.21.00.30