UNSPSC 31161825: Belleville washer

A type of non-flat washer with aslight conical shape which gives the washer a spring characteristic.

UNSPSC 31161825 Belleville washer, a Commodity code, covers industrial fastening hardware — specifically spring washers and locking washers — that state and local governments procure as maintenance and repair components for infrastructure, transit systems, and water treatment facilities. The code captures both routine purchase orders for standardized fastener packages and components embedded within larger capital construction projects. State and local buyers include transit authorities, water utilities, city public works departments, and county infrastructure agencies that use these washers for equipment assembly, preventive maintenance, and facility upgrades.

Recent activity shows two distinct procurement patterns. The Dallas Area Rapid Transit Authority issued a purchase order for Washer Lock 7/16" Medium (package of 100) in January 2026 with a January 28 response deadline — a straightforward goods procurement with FOB Destination shipping terms and Net 30 payment. In contrast, the City of Lavonia, Georgia (operating under Fayette County jurisdiction) posted a sealed competitive bid on April 24, 2026 for Water Treatment Plant 2026 Improvements, a substantial capital construction project due May 26, 2026 that encompasses modifications to raw water pump stations, settling basins, filtration units, and clearwell storage tanks — work that would incorporate washers and fasteners as subordinate components rather than the primary procurement focus. The Lavonia project requires a Georgia Utility Contractor license, prevails wage compliance, Build America Buy America Act certification, and 4% DBE participation goals. Geographic activity spans Georgia and Texas; the code shows limited but concrete recent state and local procurement activity focused on both routine maintenance supply and embedded infrastructure components.