UNSPSC 31161828: Slotted washer

A type of washer having a wide range of flexibility without creating a heavy load build up.

UNSPSC 31161828 Slotted washer is a Commodity code that covers fastening hardware components—washers with slots or grooves—procured by state and local government for maintenance, repair, and capital construction projects. State and local buyers purchase these items as component parts for water treatment facilities, transit systems, building infrastructure, and general maintenance operations. Issuing bodies include municipal utilities (water and wastewater authorities), transit agencies, and city public works departments. The Dallas Area Rapid Transit Authority (DART) and municipal water utilities represent the kinds of repeat buyers active under this code. These washers are typically procured in small quantities (packages of 100 or fewer units) through purchase orders with short lead times and straightforward competitive bidding.

Recent activity shows the code sees solicitation across Texas and Georgia. The Dallas Area Rapid Transit Authority posted a purchase order on January 21, 2026 for Washer Lock 7/16" Medium (Package of 100), item number 2097555, with a response deadline of January 28, 2026, requiring FOB Destination shipping and Net 30 payment terms through the BONFIRE system. The City of Lavonia, Georgia posted sealed competitive bidding for Water Treatment Plant 2026 Improvements on April 24, 2026 (due May 26, 2026), a nine-month infrastructure project that will include fastening hardware as component materials; this opportunity requires a Georgia Utility Contractor license, Davis-Bacon prevailing wage compliance, and includes 4.0% DBE participation goals. Slotted washers under this code are typically low-dollar-value line items embedded within larger construction or maintenance procurements rather than standalone opportunities, making direct tracking of sole-source demand difficult.