UNSPSC 31161820: Spherical or domed washers

UNSPSC 31161820 Spherical or domed washers is a Commodity code that covers fastening hardware components state and local governments procure for maintenance, construction, and capital projects. Recent activity shows the code sees use across both large infrastructure upgrades and routine parts procurement, though the opportunities posted show a mismatch — one opportunity involves water treatment plant construction where washers may be incidental components, while the other is a direct parts purchase for transit authority operations. The scope of work under the code spans industrial fastening hardware that state and local entities use for equipment assembly, facility repairs, and construction work. Issuing bodies include municipalities, transit authorities, and water utilities performing maintenance and capital improvement work.

Activity appears geographically dispersed. The Dallas Area Rapid Transit Authority (DART) in Texas posted a straightforward purchase order for Washer Lock 7/16" Medium (Package of 100) with a due date of January 28, 2026, under an open competitive procurement with FOB Destination shipping required and Net 30 payment terms. The City of Lavonia, Georgia, issued a sealed-bid IFB for Water Treatment Plant 2026 Improvements with a May 26, 2026, deadline that includes comprehensive facility modifications where fasteners would be ancillary to the primary construction scope; this project requires a Georgia Utility Contractor license and compliance with prevailing wage and Build America, Buy America Act requirements. The code shows limited distinct visibility as a primary procurement driver in recent state and local notices — fasteners typically appear as line-item components within larger construction or maintenance contracts rather than standalone commodities.