UNSPSC 31161705: Cap nuts

UNSPSC 31161705 Cap nuts (Commodity) represents a narrow fastener supply category where state and local governments purchase specific nut types—chiefly elastic stop nuts, Grade 8 hex nuts, and specialized fasteners such as M8 ESNA suspension-spring nuts—for transit operations, water utility maintenance, and general fleet upkeep. The Dallas Area Rapid Transit Authority (DART) dominates recent activity under this code, having posted four separate cap nut and related fastener solicitations since mid-January 2026, all requiring FOB Destination pricing with freight included and Net 30 payment terms through the BONFIRE procurement platform. The City of Lavonia, Georgia also appears in the dataset but under a broader water treatment plant construction bid (PE66940NONST2026000000005) where cap nuts and fasteners are component materials rather than the primary procurement object; that sealed bid closes May 26, 2026, at 10:00 AM with a pre-bid conference on May 7, 2026. Riverside County, California issued an RFB for miscellaneous Cla-Val parts (RFB3909) in January 2026, though that solicitation focuses on valve components rather than cap nuts proper.

DART's fastener purchases cluster in Texas, with four IFBs posted in late January 2026 targeting elastic stop nuts (1/4-28 zinc, due February 5), Grade 8 hex nuts (9/16"-18, due January 28), M8 ESNA fasteners (due January 28), and cut washers (5/16", due January 29)—all consumable supplies with short lead times and routine delivery cycles. The Lavonia water treatment plant project spans Georgia and involves substantial construction services where fasteners are incidental. No set-asides, DBE goals, or vendor restrictions are noted in the DART solicitations, which appear open to all qualified suppliers on standard commercial terms. The code shows modest but concentrated activity dominated by a single repeat buyer (DART) purchasing small-quantity fastener consumables on short procurement cycles, alongside a single larger infrastructure project in Georgia where fasteners are embedded in broader construction scope. Geographic activity is limited to Texas and Georgia with no discernible national spread in recent months.