UNSPSC 31161741: Internal wrenching nut

A cylindrical shaped nut that has the inner part processed in spline shape to use the opposite sides of the bearing side as used with the insertion wrench.

UNSPSC 31161741 Internal wrenching nut (Commodity) covers the procurement of fasteners—specifically nuts and related bolt assemblies—that state and local governments acquire for transit fleet maintenance, water infrastructure operations, and general equipment repair. State and local buyers under this code include regional transit authorities, municipal water districts, and county departments. The Dallas Area Rapid Transit Authority (DART) has posted multiple purchase orders for nuts in recent months, appearing as a repeat buyer of fastener supplies for motor installation, truck assembly, and equipment maintenance. Work solicited under the code involves straightforward procurement of manufactured fasteners with specifications tied to particular equipment applications—#10-24 slotted stainless steel nuts for DART's fleet, ESNA steel nuts for motor and truck assembly, and similar component-level purchases that support ongoing operations rather than capital construction.

Recent activity spans Texas and California. DART in Dallas County, Texas posted solicitation 2098972 on May 13, 2026 (due May 20, 2026) for #10-24 SSTL slotted nuts under a purchase order RFQ through its BONFIRE system, with FOB Destination shipping and Net 30 payment terms; the authority posted a second fastener solicitation (2097703) in January 2026 for ESNA steel nuts for motor and truck assembly, again through BONFIRE with similar delivery and payment requirements. Riverside County, California issued RFB 3909 on January 21, 2026 (due February 13, 2026) for miscellaneous Cla-Val parts inventory—though this entry spans plumbing components beyond the narrow nuts scope. The code shows light, sporadic activity centered on routine maintenance-supply replenishment rather than volume or consolidated procurement; responses require rapid turnaround (one to three weeks from posting), FOB Destination compliance, and invoicing in triplicate to designated email addresses.