UNSPSC 31161737: Shear nut

Fastening device designed to provide a permanent one way fastening.

UNSPSC 31161737 Shear nut (Commodity) covers fastening hardware—primarily standard nuts in various grades, thread sizes, and finishes—that state and local governments procure for maintenance, repair, and construction support. Recent activity shows a strong mix of routine consumable purchases for transit and water-utility operations. The Dallas Area Rapid Transit Authority has posted multiple procurements for elastic stop nuts (1/4-28 zinc), Grade 8 nuts (9/16"-18), and M8 hex suspension spring fasteners in small boxes or packages of 25 to 100 units, each with seven- to fourteen-day response windows. These acquisitions reflect standing inventory replenishment for rolling stock and facility maintenance rather than one-time capital projects. A parallel opportunity from the City of Lavonia, Georgia (operating under Fayette County jurisdiction) for the Water Treatment Plant 2026 Improvements project demonstrates that nuts and fasteners also appear in larger infrastructure contracts, though the shear nut code tag on that water-treatment solicitation appears to be a minor classification within a broader sealed-bid construction effort posted April 24, 2026, with a May 26 deadline.

Activity concentrates in Texas and Georgia, with DART accounting for the bulk of recent postings across January and February 2026. DART's standardized procurement process requires FOB Destination pricing with freight included, Net 30 payment terms, submission via the BONFIRE platform, and strict delivery-schedule compliance; failure to meet timelines triggers rejection and default termination. Riverside County, California issued a separate RFB (posted January 21, 2026, due February 13) for miscellaneous Cla-Val parts inventory, suggesting state-level and county-level water authorities also use this code for industrial component replenishment. No set-asides, DBE requirements, or incumbent vendors are named in the DART opportunities, indicating open competition. The code shows consistent low-dollar consumable activity from transit authorities and municipal utilities, with no disclosed award values in any recent posting.