U.S. imports of Parts of Locks, Base Metal (HS 830160) totaled $29.7M in August 2026, imported from 51 countries.
Importers of Parts of Locks, Base Metal paid $3.6M in duties in August 2026, an average duty rate of 12.44% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
2.6K import shipments a month
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.
Subheading 3 of 7 in heading 8301
Subheading 830160 · $29.7M of $236.3M
ImportsExports
Imports
$29.7MYoY · free account
Exports
$19.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $376.6M of Parts of Locks, Base Metal and exported $236.5M.
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 |
|---|---|---|---|---|---|
| 8301600060 | Parts of Locks, Base Metal | $24.2M | 12.47% | 81.39% | $3.0M |
| 8301600010 | Parts of Locks, of Copper or Copper Alloys | $5.1M | 12.28% | 75.80% | $622K |
| 8301600000 | Parts of Locks, Base Metal | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8301600000 | Parts of Locks, Base Metal | $19.7M |
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.
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Imports · August 2026
origin
China and Mexico together supply 57% of it. China pays 22.3% duty; Mexico 4.1%.
customs district
destination
entry
rate provision · imports
19.3% enters free of duty; duty collected equals 12.44% of imports for consumption.