UNSPSC 31161636: Welding bolt

A bolt that has an external screw. The screw part has small protrusions above and below the head for welding.

UNSPSC 31161636 Welding bolt is a Commodity code that captures the procurement of welding fasteners and bolt assemblies used in industrial fabrication and infrastructure maintenance, though recent state and local solicitations show limited direct activity under this specific code. State and local governments purchasing under this code include water utility districts, municipal water authorities, and city public works departments. These entities acquire welding bolts and related fastening components as inputs to equipment assembly, infrastructure repair, and field maintenance work — typically as subordinate line items within larger equipment purchases or construction contracts rather than as standalone solicitations.

The North Texas Municipal Water District Maintenance Department issued IFB 26163B on July 9, 2026, for two Lincoln Frontier 400X diesel-driven welder/generators with a response date of July 29, 2026, representing equipment procurement where welding bolts serve as assembly components. A secondary example appears in the City of Lavonia, Georgia's sealed competitive bid for Water Treatment Plant 2026 Improvements (PE66940NONST2026000000005), posted April 24, 2026, with a May 26, 2026 deadline; that project encompasses comprehensive facility upgrades including modifications to filtration, chemical feed, and storage systems where welding and bolted connections are incidental to the primary scope. The Eastern Municipal Water District (EMWD) in Riverside County, California issued RFQ 3930 on March 17, 2026, for Lineseal XP 36" butterfly valves (due March 20, 2026), which involve gasket and bolt nut sets as standard components. Recent activity clusters in Texas and California water utility districts, with secondary activity in Georgia municipal water authorities. The code shows sparse direct procurement volume — welding bolts are typically embedded within larger equipment or construction awards rather than solicited as primary deliverables.