UNSPSC 31161826: Notched washer

A type of washer generally used with a key to prevent rotation of the washer relative to the shaft.

UNSPSC 31161826 Notched washer (Commodity) covers industrial fastening hardware components that state and local governments procure for infrastructure maintenance, facility operations, and construction projects. The code captures small-volume routine purchases of standardized hardware as well as larger procurements embedded within comprehensive facility upgrade contracts. Recent activity shows two distinct patterns: transit authorities and municipal utilities source notched washers as replacement parts and consumables through direct purchase orders, while municipal water and wastewater authorities incorporate fastening specifications into sealed-bid construction contracts for treatment facility modifications and equipment installations.

The issuing-body mix includes transit authorities (Dallas Area Rapid Transit Authority) and municipal utility departments operating under county jurisdiction (City of Lavonia, Georgia, under Fayette County). Geographic activity spans the South and Southwest, with recent solicitations in Georgia and Texas. Representative opportunities include DART's January 2026 purchase order for Washer Lock 7/16" Medium (Package of 100), posted January 21, 2026, with a submission deadline of January 28, 2026, and the City of Lavonia's sealed-bid solicitation for Water Treatment Plant 2026 Improvements (PE66940NONST2026000000005), posted April 24, 2026, with a bid deadline of May 26, 2026, which specified hardware components as part of a nine-month facility upgrade to increase treatment capacity to 3.0 million gallons per day. Both procurements require FOB Destination shipping, compliance with prevailing wage and federal work authorization standards where applicable, and adherence to Build America, Buy America sourcing requirements on the municipal construction project.