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HSChapter 74
U.S. imports of threaded copper screws, bolts & nuts (including iron/steel with copper heads) (HS 741533) totaled $4.8M in April 2026, traded with 27 countries.
Importers of Threaded Copper Screws, Bolts & Nuts (Including Iron/Steel with Copper Heads) paid $2.4M in duties in April 2026 — an effective duty rate of 52% on $4.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataThreaded screws, bolts, and nuts of copper — or of iron/steel fitted with copper heads — are classified across five 10-digit lines that distinguish wood screws (7415330500), Muntz or yellow metal bolts (7415331000), and general threaded fasteners subdivided by shank-thread diameter relative to 6mm (7415338010 and 7415338050), plus a residual line (7415338550). Muntz metal, a high-zinc brass alloy, has its own dedicated line due to its historical use in marine and architectural applications. Taiwan leads US supply, with China and India also significant. The diameter-based split between 7415338010 (over 6mm) and 7415338050 (under 6mm) is a common classification decision point for importers of general-purpose copper bolts.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Muntz metal is a high-zinc brass alloy (approximately 60% copper, 40% zinc) historically used for ship sheathing, condenser tubes, and architectural hardware due to its strength and marine corrosion resistance. Its dedicated line (7415331000) reflects its distinct alloy composition and long-standing commercial identity separate from standard brass or pure copper fasteners.
The shank-thread diameter of the bolt — not the head diameter or overall length — determines whether the article falls under 7415338010 (over 6mm) or 7415338050 (under 6mm). Importers should measure the nominal thread diameter as specified in the product standard or technical drawing and document that measurement in their classification records.
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 |
|---|---|---|---|---|
| 7415338010 | THRD SCRWS NTS BLTS NESOI CU HVG SH TH 6MM OV DIAM | $3.3M | 52.96% | $1.7M |
| 7415338050 | THR CU SCRWS NTS BLTS NESOI W S T H UN 6MM DIAM | $1.4M | 50.27% | $634K |
| 7415331000 | MUNTZ OR YELLOW METAL BOLTS, COPPER | $71K | 52.93% | $33K |
| 7415330500 | THREADED COPPER SCREWS FOR WOOD | $61K | 56.94% | $35K |
THRD SCRWS NTS BLTS NESOI CU HVG SH TH 6MM OV DIAM
THR CU SCRWS NTS BLTS NESOI W S T H UN 6MM DIAM
MUNTZ OR YELLOW METAL BOLTS, COPPER
THREADED COPPER SCREWS FOR WOOD
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7415338550 | OTHER COPPER SCREWS (NOT FOR WOOD) BOLTS AND NUTS | $3.2M |
| 7415330500 | THREADED COPPER SCREWS FOR WOOD | $1.3M |
OTHER COPPER SCREWS (NOT FOR WOOD) BOLTS AND NUTS
78.5K kg
THREADED COPPER SCREWS FOR WOOD
39.2K kg
REFINED COPPER CATHODES AND SECTIONS OF CATHODES
HS 740311
COPPER WASTE AND SCRAP
HS 740400
TUBES & PIPES OF REFINED COPPER
HS 741110
COPPER ALLOY TUBE OR PIPE FITTINGS
HS 741220
COPPER FOIL, NOT BACKED, OF REFINED COPPER
HS 741011
BARS, RODS AND PROFILES OF REFINED COPPER
HS 740710
Supplier Network
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| State | Imports | Exports | Balance |
|---|---|---|---|
| Illinois | $545K | $927K | +$382K |
| Texas | $170K | $909K | +$739K |
| California | $627K | $405K | -$221K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $123K | $1.7M | +$1.6M |
| LOS ANGELES, CA | $1.5M | -- | -$1.5M |
| NEWARK, NJ | $550K | -- | -$550K |