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HSChapter 73
U.S. imports of roller chain of iron or steel (HS 731511) totaled $15.9M in April 2026, traded with 39 countries.
Last updated: April 2026 dataRoller chain — defined by its cylindrical rollers that engage sprocket teeth to transmit power — is a precision mechanical component with tight dimensional tolerances governed by ISO and ANSI standards. The US schedule subdivides the heading into motor vehicle roller chain (7315110005), bicycle chains (7315110010), other chains with pitch not over 50 mm and more than three parts per pitch (7315110045), and a residual line (7315110060). Japan leads supply under this heading, reflecting the dominance of Japanese manufacturers in high-precision drive chain for industrial and automotive applications; China is the second-largest source and is subject to Section 301 tariffs. Importers sourcing bicycle chains should note that pitch and parts-per-pitch specifications determine the correct 10-digit line.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Bicycle chains must have a pitch not over 50 mm and more than three parts per pitch, and must be identifiable as bicycle-specific by design. Motor vehicle roller chains (7315110005) are distinguished by their intended use in automobiles, trucks, or motorcycles. When a chain meets the dimensional criteria but its end use is ambiguous, the importer should document the intended application and, if necessary, seek a CBP binding ruling.
Japanese manufacturers such as Tsubaki and Daido have established global reputations for dimensional precision, fatigue resistance, and quality consistency that meet OEM specifications in automotive, food processing, and industrial machinery. Many US equipment manufacturers specify Japanese-origin chain by brand or JIS/ANSI tolerance class, creating a quality-differentiated market segment where price competition from other origins is limited.
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Monthly import values over time