UNSPSC 31163301: Double ended stud

A stud threaded at both ends.

UNSPSC 31163301 Double ended stud is a Commodity code that captures fastener and threaded-product procurement by state and local transit authorities, transportation agencies, and other public bodies. Recent solicitation activity shows state and local governments buying a broad range of fastening supplies under this code, including hex bolts (SAE and metric), cap screws, lock nuts, flange nuts, washers, threaded rods, socket cap screws, machine screws, rivets, and related fastening hardware. The Orange County Transportation Authority's IFB 250199 for Threaded Products & Fasteners illustrates the scope: a three-year supply contract for 154 line items of fastening stock with estimated annual usage quantities, requiring North American-made Grade 8 (10.9 metric) high-strength bolts certified to ISO 17025 or MilSpec documentation, monthly scheduled deliveries to two facilities, and 48-hour response on urgent orders. Issuing bodies soliciting under this code include regional transit authorities as primary buyers, with procurement structured as invitation-for-bid (IFB) supply contracts featuring firm fixed unit pricing, prevailing wage requirements, and Disadvantaged Business Enterprise set-asides where applicable.

The most recent activity concentrates in California and Texas. The Orange County Transportation Authority's IFB 250199, posted May 1, 2026 with bids due March 16, 2026, covers fasteners for three-year delivery through March 31, 2029, with an estimated contract value of $150,000; evaluation weights lump-sum total price at 80% and percentage discount from publisher's price list at 20%, with award to the lowest responsive and responsible bidder. A Dallas Area Rapid Transit Authority procurement (2097740, posted January 29, 2026, due February 5, 2026) tagged to this code shows category misclassification—it solicits rubbing alcohol rather than fasteners—indicating limited recent relevant activity under the nominal Commodity scope. State and local procurement under 31163301 remains concentrated in transit and transportation authority supply contracts with emphasis on stocked fastening inventory, North American origin requirements, and Davis-Bacon or state prevailing wage compliance.