UNSPSC 31161735: Cage nut

A special kind of fastener that is used for square hole racks. It can be of several types: cylindrical, normal, to level out, clip or frontal assembly.

UNSPSC 31161735 Cage nut, a Commodity code, covers fastening hardware and mechanical components that state and local governments procure for transit operations, water infrastructure, and general maintenance. Recent solicitations show cage nuts and related fasteners (elastic stop nuts, hex nuts, washers) being procured as consumable replacement parts in small unit quantities—packages of 25 to 100 units typical—with tight delivery timelines and FOB Destination shipping required. The Dallas Area Rapid Transit Authority (DART) dominates recent activity under this code, posting four fastener-related solicitations between January 21 and February 5, 2026, all with submission windows of seven to nine days and strict delivery performance standards. A single municipal water infrastructure opportunity posted by the City of Lavonia, Georgia on April 24, 2026 (sealed competitive bid due May 26, 2026) encompasses broader construction services but does not isolate cage nut procurement as a line item; the code tag appears misaligned with that project's scope. A fifth opportunity from Riverside County, California (RFB posted January 21, 2026, due February 13, 2026) sought Cla-Val parts without detail sufficient to confirm relevance to cage nuts specifically.

Geographic activity concentrates in Texas, where DART represents the bulk of recent procurement volume, and touches California and Georgia. DART's four January–February 2026 orders solicit nuts and washers via the BONFIRE platform with Net 30 payment terms and invoicing to APInvoices@dart.org; no set-aside or DBE designations appear in those procurements, and no incumbent vendors are identified. The City of Lavonia water treatment plant upgrade (PE66940NONST2026000000005, sealed bid, pre-bid May 7, 2026, response deadline May 26, 2026) requires Georgia Utility Contractor licensure, Davis-Bacon prevailing wage compliance, and Build America, Buy America sourcing; it carries 4.0% DBE participation goals but encompasses construction services well beyond fastener supply alone. Activity under this code is modest and concentrated among a single repeat buyer; most opportunities are routine consumable orders with compressed response windows and emphasis on reliable, timely delivery.