UNSPSC 31161821: Tapered washer

A washer made of steel or stainless steel for use with channel sections.

UNSPSC 31161821 Tapered washer is a Commodity code covering fastening hardware components used in maintenance, repair, and capital construction projects across state and local infrastructure. State and local governments procure tapered washers as component parts in water treatment facility upgrades, transit system maintenance, utility infrastructure projects, and similar infrastructure work where standardized fastening hardware is required. The code sees activity from transit authorities, municipal water departments, and city public works operations.

Dallas Area Rapid Transit Authority (DART) posted a purchase order in January 2026 for Washer Lock 7/16" Medium (Package of 100), with a submission deadline of January 28, 2026, through the BONFIRE procurement system. The City of Lavonia, Georgia, issued a sealed competitive bid in April 2026 for comprehensive Water Treatment Plant 2026 Improvements (Solicitation PE66940NONST2026000000005, due May 26, 2026), a substantial infrastructure project that encompasses facility upgrades including modifications to settling basins, filtration units, and clearwell storage tanks—work that typically incorporates fastening hardware such as tapered washers as component inputs. Activity is concentrated in Georgia and Texas, with infrastructure modernization projects driving recent procurement volume in the code category.