UNSPSC 31391505: Aluminum standard precision machining

Aluminum objects that have been machined to tolerances equal to or greater than 0.050 mm for major dimensions

UNSPSC 31391505 Aluminum standard precision machining (Commodity) covers fabricated metal components manufactured to tight tolerances for municipal water infrastructure, though recent state and local procurement under this code shows limited activity focused on fire hydrant supply and related water utility equipment. The City of Midland, Texas, acting on behalf of Mason County, has posted the primary recent opportunity — an IFB for 71 fire hydrants (45 units at 4-foot, 20 units at 5-foot, and 6 units at 6-foot) under the U25-01 Fire Hydrant Replacement Project, with delivery F.O.B. Midland and freight prepaid included in bid pricing. While fire hydrants themselves are typically cast iron or ductile iron products rather than aluminum precision-machined components, the code assignment suggests the procurement may encompass aluminum subassemblies, internal valve components, or trim hardware meeting precision specifications. Issuing bodies soliciting under this code appear limited to municipal water departments and county-level utilities managing infrastructure replacement or expansion.

The code shows sparse recent activity concentrated in Texas, with Midland's fire hydrant procurement representing the only current opportunity in the dataset. The Midland IFB closed on April 9, 2026, with mandatory compliance including proof of workers' compensation insurance within 21 days of award, execution of a Non-Collusion Statement, and potential qualification for local preference under Texas Local Government Code Section 271.9051 if the bidder's price falls within five percent of the lowest non-local bid. No set-aside or disadvantaged-enterprise designations appear in the solicitation documents. The absence of broader state-level or multi-jurisdiction activity under this code suggests either narrow application of the aluminum precision-machining classification within state and local procurement or potential code misalignment with the actual products being solicited.