U.S. imports of Self-Tapping Screws of Iron or Steel (HS 731814) totaled $68.1M in August 2026, imported from 45 countries.
Importers of Self-Tapping Screws of Iron or Steel paid $39.1M in duties in August 2026, an average duty rate of 57.57% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Self-Tapping Screws of Iron or Steel imports of $68.1M in August 2026 ran 13% below the year-to-date monthly average of $78.2M.
Last updated: August 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.
6.8K import shipments a month
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 · $68.1M of $473.8M
Trade Directory
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ImportsExports
Imports
$68.1MYoY · free account
Exports
$14.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $941.5M of Self-Tapping Screws of Iron or Steel and exported $143.0M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7318141060 | Selftap Screw; Iron/Stl Oth; Shank/Thred Diam Lt 6mm | $46.1M | 57.24% | 98.60% | $26.4M |
| 7318145080 | Self-Tapping Scrws Irn/Stl Thred Diam 6mm or >; Nes | $13.6M | 56.96% | 97.77% | $7.7M |
| 7318141030 | Self-Tap Screw; Stnls Steel; Shank/Thred Diam Lt 6mm | $5.7M | 60.89% | 100.00% | $3.5M |
| 7318145020 | Self-Tapping Screws Stnls Stl Thred Diam 6mm or > | $2.5M | 59.44% | 100.00% | $1.5M |
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 | $14.2M |
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.
Imports · August 2026
origin
Taiwan and China together supply 85% of it. China pays 81.3% duty; South Korea 50.6%.
customs district
destination
entry
rate provision · imports
1.4% enters free of duty; duty collected equals 57.57% of imports for consumption.