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HSChapter 73
U.S. imports of screw hooks and screw rings of iron or steel (HS 731813) totaled $1.1M in May 2026, traded with 21 countries.
Importers of Screw Hooks and Screw Rings of Iron or Steel paid $649K in duties in May 2026 — an effective duty rate of 61% on $1.1M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: May 2026 dataScrew hooks and screw rings — threaded fasteners with a hook or closed-ring terminus used in hanging, rigging, and hardware applications — are subdivided in the US schedule by thread diameter: under 6 mm (7318130030) and 6 mm or greater (7318130060). China is the dominant supplier, with South Korea and Vietnam also present in the import mix. The thread diameter breakpoint is a hard classification boundary, so importers should measure thread diameter precisely and document it in entry records to avoid reclassification at the port.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The 6 mm threshold refers to the nominal thread diameter of the screw shank — the threaded portion that is driven into the substrate — not the diameter of the hook or ring opening. Standard thread gauges or calipers applied to the shank are the appropriate measurement tools. Importers should include thread diameter specifications on commercial invoices to facilitate accurate classification and reduce the risk of CBP queries.
Yes. The heading explicitly covers both screw hooks (open terminus) and screw rings (closed terminus, commonly called screw eyes or eye screws). Both forms share the same 10-digit lines differentiated only by thread diameter. The distinction between an open hook and a closed ring does not create a separate tariff line under the current US schedule.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $366K | $29K | -$338K |
| KOREA, SOUTH | $292K | $11K | -$282K |
| GERMANY | $131K | $29K | -$101K |
| VIETNAM | $154K | $3K | -$150K |
| MEXICO | -- | $152K | +$152K |
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7318130060 | SCREW HOOKS AND RINGS IOS THREAD DIAM 6MM OR MORE | $814K | 55.06% | 95.47% | $448K |
| 7318130030 | SCREW HOOKS OR RINGS IOS THREAD DIAM LS THN 6MM | $182K | 61.36% | 100.00% | $112K |
SCREW HOOKS AND RINGS IOS THREAD DIAM 6MM OR MORE
SCREW HOOKS OR RINGS IOS THREAD DIAM LS THN 6MM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7318130000 | SCREW HOOKS AND SCREW RINGS OF IRON OR STEEL | $584K |
SCREW HOOKS AND SCREW RINGS OF IRON OR STEEL
36.2K 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 |
|---|---|---|---|
| Illinois | $220K | $91K | -$129K |
| Texas | $36K | $173K | +$137K |
| California | $44K | $105K | +$61K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LONG BEACH, CA | $233K | -- | -$233K |
| LOS ANGELES, CA | $213K | $6K | -$207K |
| CHARLESTON, SC | $113K | -- | -$113K |