UNSPSC 31161835: Tab washer

A type of thin metal washers designed with two or more tabs which project from the outside diameter.

UNSPSC 31161835 Tab washer is a Commodity code that describes fasteners—small metal washers used to distribute load and prevent fastener pull-through in mechanical assemblies. State and local governments procure tab washers primarily for transit system maintenance, water infrastructure repairs, and fleet and facilities upkeep. The solicitations under this code reflect routine maintenance and repair activities rather than new construction; purchasing is episodic and driven by asset condition, seasonal demand, and operational need rather than planned capital programs.

Dallas Area Rapid Transit Authority (DART) appears as the primary recent buyer, soliciting bolts and related fasteners for transit vehicle and infrastructure maintenance under competitive bid processes with FOB Destination shipping and Net 30 payment terms. Geographic activity is concentrated in Texas, specifically the Dallas-Fort Worth region, with DART's routine maintenance cycles generating regular small-value purchase orders. A representative recent opportunity is DART's September 2026 solicitation for 1/2"-13 X 2-3/4" bolts (Solicitation 2100828), due September 11, 2026, which required BONFIRE registration and specified delivery timing as critical performance terms. The second opportunity cited—the City of Lavonia, Georgia's water treatment plant improvements project (PE66940NONST2026000000005, due May 26, 2026)—is a major infrastructure renovation and does not involve tab washers; the code appears mistagged for that procurement. Recent activity under this code is limited and concentrated in transit maintenance rather than distributed across multiple jurisdictions.