UNSPSC 31161821: Tapered washer

A washer made of steel or stainless steel for use with channel sections.

UNSPSC 31161821 Tapered washer is a Commodity code that in recent state and local procurement activity covers fasteners and hardware components used in transit and utility infrastructure maintenance and construction. The Dallas Area Rapid Transit Authority (DART) recently solicited bolts (1/2"-13 X 2-3/4") under Purchase Order 2100828 due September 11, 2026, as a representative instance of the fastener procurement activity tagged under this code. State and local governments sourcing under this category include transit authorities and municipal utilities managing fleet, facility, and infrastructure repair and construction. The issuing bodies pulling fasteners through this code are diverse in type and scale—from dedicated transit operators to small municipal water authorities—each with routine procurement needs for standard hardware components integrated into larger maintenance and capital projects.

Geographic activity is limited in the recent record. Texas appears in the DART solicitation, and Georgia in the City of Lavonia's Water Treatment Plant 2026 Improvements project (a sealed IFB due May 26, 2026). The Lavonia water treatment facility upgrade, which includes modifications to pump stations, mixers, basins, filters, and chemical feed systems, represents the kind of large capital infrastructure work where fasteners are specified as subordinate line items rather than stand-alone procurements. The code shows sparse recent solicitation volume; the two posted opportunities span different project types and geographic regions, suggesting that tapered washer sourcing at state and local level is episodic and embedded within larger capital and maintenance contracts rather than driven by dedicated fastener RFPs.