U.S. imports of Weighing Machine Weights & Parts of Weighing Machinery (SITC 74539) totaled $8.8M in August 2026, imported from 45 countries.
Importers of Weighing Machine Weights & Parts of Weighing Machinery paid $1.2M in duties in August 2026, an average duty rate of 13.32% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataCalibration weights and mechanical components for weighing equipment — excluding parts for balances sensitive to 5 centigrams or better — are grouped here, covering a broad aftermarket and OEM supply chain that supports industrial, retail, and logistics weighing systems. The exclusion of high-sensitivity balance parts is a recurring classification edge case: importers of precision counterweights or analytical balance components must verify sensitivity thresholds before applying this heading. Weight-operated counting machine parts are also captured within this grouping.
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765 import shipments a month
Parts designed for balances capable of detecting differences of 5 centigrams (cg) or less are excluded from this heading and classified under precision instrument provisions. Importers of components for analytical or laboratory balances must confirm the parent instrument's sensitivity rating; if it meets the 5 cg threshold, a different tariff heading applies and the duty treatment may differ.
Generally yes — physical calibration weights for weighing machinery are captured here regardless of material (cast iron, stainless steel, brass). However, if a weight is purpose-built for a precision analytical balance meeting the 5 cg sensitivity threshold, it would be excluded. Importers should also check whether state or federal weights-and-measures regulations require NTEP certification for legal-for-trade use.
Basic heading 430 of 642 in section 7
Basic heading 74539 · $8.8M of $172.0B
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Imports · August 2026
origin
China pays 38.7% duty; Mexico 6.2%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$8.8MYoY · free account
Exports
$4.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $112.3M of Weighing Machine Weights & Parts of Weighing Machinery.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.