UNSPSC 31163304: Complex stud

A stud like component with other than straight shaft or other complex physical characteristics

UNSPSC 31163304 Complex stud is a Commodity code covering fastening hardware components—specifically hex bushings, threaded rods, and related studded or threaded connectors—that state and local governments procure for infrastructure maintenance, vehicle fleet upkeep, and facility operations. The code captures individual fastener components rather than complete assemblies; recent solicitations show procurement of hex bushings and broader threaded product suites used in mechanical and plumbing systems. Issuing bodies span county purchasing departments and transit authorities, each sourcing these items for routine operational and maintenance inventories.

Orange County Transportation Authority (OCTA) in California posted the most substantial recent opportunity: IFB 250199, due March 16, 2026, for threaded products and fasteners with an estimated contract value of $150,000 over three years and a Disadvantaged Business Enterprise goal in place. The procurement specifies North American-made Grade 8 high-strength bolts (SAE and metric), hex bolts, cap screws, lock nuts, flange nuts, washers, threaded rods, socket cap screws, machine screws, rivets, brass fittings, and hose clamps across 154 line items with monthly scheduled deliveries to two OCTA facilities and 48-hour response requirements for urgent orders. Dallas County, Texas also posted a smaller IFB (2100722) on September 22, 2026, for hex bushings 1/4" × 1/2" black pipe due September 25, 2026. The code shows activity primarily in California and Texas, with transit authorities and counties as the primary buyers.