UNSPSC 31163302: Weld or clinch stud

Studs designed to be welded or mechanically secured to a metal part.

UNSPSC 31163302 Weld or clinch stud, a Commodity code, covers fastening components and welding supplies purchased by state and local water districts, transit authorities, and transportation departments. Recent solicitations under this code show purchasing activity spanning welding equipment, threaded fasteners, and consumable supplies rather than discrete stud components alone. The issuing bodies include special-purpose districts—water authorities and regional transit agencies—that procure these items for maintenance and fleet operations. Scope ranges from capital equipment such as diesel-powered welder/generators to consumable supplies including bolts, nuts, washers, and fastening hardware purchased on recurring contracts with multi-year terms.

Recent activity appears concentrated in Texas and California. The North Texas Municipal Water District Maintenance Department posted an IFB (solicitation 26163B) on July 9, 2026 for two Lincoln Frontier 400X diesel-driven welder/generators with a due date of July 29, 2026. The Orange County Transportation Authority issued IFB 250199 in May 2026 for threaded products and fasteners—hex bolts, cap screws, lock nuts, washers, threaded rods, and socket cap screws—with an estimated contract value of $150,000 over three years and a requirement for North American-made Grade 8 high-strength fasteners; bids were due March 16, 2026 with anticipated award April 6, 2026. The Dallas Area Rapid Transit Authority posted a purchase order for rubbing alcohol in January 2026, a supply category that appears tangential to the code's nominal scope and may reflect tagging misalignment rather than core procurement activity under this code.