UNSPSC 31161838: Tongued washer

A type of safety washer provided with a hook-shaped projection extending into a hole in the surface which bears the nut.

UNSPSC 31161838 Tongued washer (Commodity) covers fastener components that state and local governments procure as maintenance and repair stock and for capital projects involving equipment assembly and water infrastructure. The code sees activity primarily from transit authorities and municipal utilities seeking standard industrial fasteners to support vehicle fleet maintenance, pump and motor assembly, and water treatment plant equipment installation and upgrades. Recent solicitations show transit authorities and municipal water utilities as the main buyers; Dallas Area Rapid Transit Authority (DART) and the City of Lavonia, Georgia have each posted opportunities in 2026 that include or reference fastener procurement.

DART posted an IFB in September 2026 for bolts (1/2"-13 X 2-3/4") with a response deadline of September 11, 2026, specifying FOB Destination shipping terms with freight included, Net 30 payment, and strict delivery timing requirements as grounds for contract performance evaluation. The City of Lavonia's sealed competitive bid for water treatment plant improvements posted in April 2026 with a May 26, 2026 deadline encompasses a nine-month construction schedule requiring fasteners as component materials for pump station modifications, mixer and basin installation, filtration unit renovations, and clearwell storage modifications. Activity is concentrated in the South and represents routine procurement for both vehicle maintenance fleets and capital water infrastructure projects. The code shows limited recent visibility in the opportunities block, with both named solicitations involving fasteners as incidental supplies within larger transit fleet or infrastructure work rather than standalone fastener contracts.