UNSPSC 31391705: Aluminum high precision machining

Aluminum objects that have been machined to tolerances less than 0.020 mm for major dimensions

UNSPSC 31391705 Aluminum high precision machining (Commodity) covers precision-machined aluminum components and assemblies that state and local governments procure for infrastructure and operations. However, the recent activity under this code shows a significant mismatch: the primary recent opportunity is a fire hydrant procurement, which does not align with the code's nominal scope of high-precision aluminum machining. State and local buyers using this code appear to be sourcing finished infrastructure products rather than precision machining services or components. The issuing body in the recent record is a municipal water utility acting through a city purchasing office—specifically the City of Midland, Texas, acting on behalf of Mason County.

The City of Midland issued IFB 26003721 on March 26, 2026, for 71 fire hydrants (45 units of 4-foot, 20 units of 5-foot, and 6 units of 6-foot heights) with a due date of April 9, 2026, through the Bonfire e-procurement system. Bids were to include itemized unit pricing, descriptive literature, delivery timeframes, and brand identification. All hydrants were to be delivered F.O.B. Midland with freight prepaid. Texas local preference rules applied under Section 271.9051, permitting local bidders within five percent of the low non-local bid to receive consideration for award. No set-aside designations were specified. The mismatch between the code's name and the fire hydrant procurement suggests this code sees limited relevant recent activity, or state and local procurement systems are applying it inconsistently to finished goods that do not represent precision machining work.