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HSChapter 73
U.S. imports of self-tapping screws of iron or steel (HS 731814) totaled $76.4M in July 2026, traded with 43 countries.
Importers of Self-Tapping Screws of Iron or Steel paid $43.4M in duties in July 2026 — an effective duty rate of 58% on $74.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataSubject to Section 301 tariffs on Chinese-origin goods, self-tapping screws of iron or steel are a high-volume fastener category widely used in construction, automotive assembly, and consumer electronics manufacturing. The US tariff schedule subdivides this heading by material (stainless steel vs. other iron/steel) and by shank/thread diameter — below 6 mm versus 6 mm or greater — across tariff lines 7318141030, 7318141060, 7318145020, and 7318145080. Taiwan is the dominant supplier, with China a close second and Japan, Vietnam, and Canada rounding out the source mix. Importers sourcing from China should account for Section 301 exposure when modeling landed costs.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7.6K shipments/mo
The US schedule splits self-tapping screws at the 6 mm shank/thread diameter threshold. Screws with a shank or thread diameter under 6 mm fall under 7318141030 (stainless steel) or 7318141060 (other iron/steel), while those at 6 mm or greater are classified under 7318145020 (stainless) or 7318145080 (other iron/steel). Measuring the actual thread diameter — not the nominal size — is critical to correct classification.
Yes. Iron and steel self-tapping screws originating in China are generally subject to Section 301 tariffs in addition to the standard column 1 rate. Importers should verify the applicable Section 301 list and any exclusion orders with a licensed customs broker, as coverage and exclusion status can change.
Subheading 3 of 12 in heading 7318
Subheading 731814 · $76.4M of $472.6M
ImportsExports
Imports
$76.4MYoY · Pro
Exports
$12.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Taiwan and China together supply 86% of it.
customs district
destination
entry
rate provision · imports
1.8% enters free of duty; the effective duty rate is 56.77%.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7318141060 | Selftap Screw;iron/Stl Oth;shank/Thred Diam Lt 6mm | $50.3M | 56.27% | 96.78% | $28.3M |
| 7318145080 | Self-Tapping Scrws Irn/Stl Thred Diam 6mm or >;nes | $17.1M | 56.90% | 96.72% | $9.7M |
| 7318141030 | Self-Tap Screw;stnls Steel;shank/Thred Diam Lt 6mm | $7.0M | 58.78% | 99.70% | $4.1M |
| 7318145020 | Self-Tapping Screws Stnls Stl Thred Diam 6mm or > | $2.0M | 61.11% | 100.00% | $1.2M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7318140000 | Self-Tapping Screws of Iron or Steel | $12.6M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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