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HSChapter 73
U.S. imports of self-tapping screws of iron or steel (HS 731814) totaled $84.3M in April 2026, traded with 34 countries.
Importers of Self-Tapping Screws of Iron or Steel paid $44.3M in duties in April 2026 — an effective duty rate of 54% on $82.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7318141060 | SELFTAP SCREW;IRON/STL OTH;SHANK/THRED DIAM LT 6MM | $59.6M | 53.13% | $30.8M |
| 7318145080 | SELF-TAPPING SCRWS IRN/STL THRED DIAM 6MM OR >;NES | $14.8M | 56.20% | $7.9M |
| 7318141030 | SELF-TAP SCREW;STNLS STEEL;SHANK/THRED DIAM LT 6MM | $7.1M | 56.01% | $4.0M |
| 7318145020 | SELF-TAPPING SCREWS STNLS STL THRED DIAM 6MM OR > | $2.8M | 56.89% | $1.6M |
SELFTAP SCREW;IRON/STL OTH;SHANK/THRED DIAM LT 6MM
SELF-TAPPING SCRWS IRN/STL THRED DIAM 6MM OR >;NES
SELF-TAP SCREW;STNLS STEEL;SHANK/THRED DIAM LT 6MM
SELF-TAPPING SCREWS STNLS STL THRED DIAM 6MM OR >
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7318140000 | SELF-TAPPING SCREWS OF IRON OR STEEL | $11.7M |
SELF-TAPPING SCREWS OF IRON OR STEEL
1.7M kg
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $15.7M | $1.4M | -$14.3M |
| California | $9.5M | $1.4M | -$8.1M |
| Illinois | $9.0M | $1.5M | -$7.5M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $28.1M | -- | -$28.1M |
| LONG BEACH, CA | $10.4M | -- | -$10.4M |
| TACOMA, WA | $7.7M | -- | -$7.7M |