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HSChapter 83
U.S. imports of parts of locks, base metal (HS 830160) totaled $31.5M in April 2026, traded with 46 countries.
Importers of Parts of Locks, Base Metal paid $3.7M in duties in April 2026 — an effective duty rate of 14% on $25.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataBase metal lock parts — including cylinders, tumblers, bolts, springs, and housings — are traded as intermediate inputs for lock assembly and aftermarket repair, classified across three 10-digit lines that distinguish copper and copper-alloy parts (8301600010) from other base metal parts (8301600060), with a residual line (8301600000). China is the dominant supplier, with Mexico and Taiwan also significant sources. Because these components feed directly into security hardware assembly, importers should be attentive to Section 301 tariff exposure on Chinese-origin parts and to whether assembly operations in third countries constitute sufficient transformation to support a non-Chinese origin claim.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Copper and copper-alloy parts (8301600010) are singled out because brass — a copper-zinc alloy — is the traditional material for precision lock components such as pin tumblers, cylinders, and keyways due to its machinability and corrosion resistance. The separate line allows CBP to track this commercially significant material stream. Parts made of steel, zinc alloy, or other base metals fall under 8301600060.
Lock parts of Mexican origin may qualify for USMCA preferential treatment if they satisfy the applicable tariff-shift rule or regional value content requirement for heading 8301. Importers assembling finished locks in the US from Mexican-origin parts should also consider whether the finished lock, if subsequently exported, could qualify for USMCA treatment — a separate analysis from the parts import.
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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 |
|---|---|---|---|---|
| 8301600060 | PARTS OF LOCKS, BASE METAL | $26.6M | 14.41% | $3.1M |
| 8301600010 | PARTS OF LOCKS, OF COPPER OR COPPER ALLOYS | $4.9M | 14.19% | $607K |
| 8301600000 | PARTS OF LOCKS, BASE METAL | $0 | -- | -- |
PARTS OF LOCKS, BASE METAL
PARTS OF LOCKS, OF COPPER OR COPPER ALLOYS
PARTS OF LOCKS, BASE METAL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8301600000 | PARTS OF LOCKS, BASE METAL | $19.3M |
PARTS OF LOCKS, BASE METAL
1.7M kg
OTH BS METL MOUNTNGS FTTNGS ETC FOR MOTOR VEHICLES
HS 830230
MOUNTINGS & SMLR ART & PTS FOR BUILDINGS, BASE MTL
HS 830241
LOCKS EXCEPT MOTOR VEHICLE OR FURNITURE, BASE METL
HS 830140
OTH BASE METL MOUNTNGS FTTNGS ETC FOR FURNITURE
HS 830242
HINGES, AND PARTS THEREOF, OF BASE METAL
HS 830210
STOPPERS, CAPS, LIDS, SEALS ETC NES, PRTS, BS METL
HS 830990
| State | Imports | Exports | Balance |
|---|---|---|---|
| Indiana | $6.5M | $3.5M | -$3.0M |
| California | $5.3M | $3.9M | -$1.4M |
| Texas | $2.2M | $3.0M | +$795K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| OTAY MESA, CA | $2.2M | $4.1M | +$2.0M |
| LOS ANGELES, CA | $6.0M | -- | -$6.0M |
| LAREDO, TX | $4.0M | $1.9M | -$2.2M |