UNSPSC 31161817: Conical washers

UNSPSC 31161817 Conical washers is a Commodity code that state and local governments buy primarily as component parts for infrastructure maintenance and equipment assembly. Recent solicitations show a mismatch between the code's nominal scope and actual purchasing activity: while the code nominally describes conical washers, the recorded opportunities include a substantial water treatment plant construction project and a transit authority purchase order for lock washers—related fastening hardware but not conical washers specifically. The water treatment facility upgrade issued by the City of Lavonia, Georgia, represents capital construction involving multiple mechanical systems where washers and fasteners would be subordinate materials, while the Dallas Area Rapid Transit Authority (DART) purchase order for washer locks suggests ongoing maintenance and repair procurement across transit operations. Issuing bodies soliciting under or near this code span municipal water utilities, transit authorities, and city engineering departments—a mix typical of local infrastructure and fleet maintenance programs.

Activity concentrates in Georgia and Texas based on recent postings. The City of Lavonia's water treatment plant improvements (Sealed Bid, due May 26, 2026) and DART's washer lock order (due January 28, 2026) are the primary recent opportunities on record. The mismatch between the code designation (conical washers) and the actual procurement details (a major water treatment construction project and lock washers) suggests either miscoding by the issuing bodies or that this code does not see significant direct procurement activity for the component it nominally names. Prospective vendors should clarify with issuing bodies whether opportunities tagged to this code genuinely require conical washers or fall into adjacent fastening hardware categories.