UNSPSC 31161728: Coupling nuts

UNSPSC 31161728 Coupling nuts is a Commodity code that reflects state and local procurement of fastening components for infrastructure and utility systems. The recent activity under this code, however, shows minimal direct solicitation for coupling nuts as a standalone product line. Instead, the code appears tagged to broader construction and facility-upgrade projects where coupling nuts are incidental components within larger scope packages rather than primary procurable items. State and local governments solicit under this code primarily through municipalities and special-purpose utilities executing infrastructure improvements, particularly water treatment and distribution system upgrades where threaded fasteners and coupling hardware form part of the equipment and piping assembly specifications. The issuing bodies include city governments managing utility infrastructure, operating independently or under county jurisdiction.

The geographic spread of recent activity centers on the Southeast, with Georgia showing current solicitation activity. The City of Lavonia, Georgia, issued a sealed competitive bid (IFB) for its Water Treatment Plant 2026 Improvements project with a response deadline of May 26, 2026. That procurement encompasses facility upgrades including modifications to pumping stations, settling basins, filtration units, and clearwell storage tanks — work in which coupling nuts would be specified as component parts of valve assemblies, fitting connections, and piping systems rather than as a primary deliverable. The project requires a Georgia Utility Contractor license, Davis-Bacon prevailing wage compliance, DBE participation goals of 4.0% for minority-owned and women-owned businesses, and Build America, Buy America Act compliance. Contract documents are available for $250 per set, with sealed bids due at Lavonia City Hall and a pre-bid conference scheduled for May 7, 2026, at 10:00 AM at the water treatment plant.