UNSPSC 31161807: Flat washers

UNSPSC 31161807 Flat washers, a Commodity code, covers fastening hardware components that state and local governments procure for routine maintenance, repairs, and capital projects across water utilities, transit authorities, and other infrastructure operators. The code encompasses standard industrial washers — in recent solicitations, lock washers in specific sizes and quantities — used in equipment assembly, mechanical systems maintenance, and construction applications. Issuing bodies under this code include municipal utilities (water and wastewater departments), regional transit authorities, and city maintenance operations that buy these items as component parts for larger repair or upgrade work or as consumable inventory for ongoing facility operations.

Geographic activity is distributed across multiple states. The Dallas Area Rapid Transit Authority posted a purchase order for Washer Lock 7/16" Medium (Package of 100) with a response deadline of January 28, 2026, and the City of Lavonia, Georgia, posted a sealed competitive bid for Water Treatment Plant 2026 Improvements (due May 26, 2026) that encompasses construction work requiring fastening hardware as part of comprehensive facility upgrades. Recent opportunities show flat washers being procured both as standalone goods through simple purchase orders and as incidental line items within larger construction or equipment projects. The code sees activity from smaller municipal departments and special-purpose districts rather than large-scale state procurement offices, reflecting the commodity nature of the product and its distributed use across local infrastructure maintenance networks.