UNSPSC 31391500: Standard precision machinings

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

UNSPSC 31391500 Standard precision machinings is a Class code that encompasses manufactured metal components and assemblies meeting engineered specifications for infrastructure and utility systems. State and local governments procure under this code primarily finished goods — such as fire hydrants, valves, fittings, and similar precision-cast or machined components — rather than machining services themselves. The issuing bodies soliciting under the code include municipal water and public works departments acting independently or on behalf of county authorities.

The City of Midland, Texas, acting on behalf of Mason County, posted an IFB on March 26, 2026 (due April 9, 2026) for 71 fire hydrants across three specifications: 45 units of 4-foot hydrants, 20 units of 5-foot hydrants, and 6 units of 6-foot hydrants, all conforming to attached technical detail sheets. Bidders submitted itemized unit pricing through the Bonfire e-procurement platform, with F.O.B. delivery to Midland and freight prepaid included in the bid price. Texas local preference provisions applied, allowing the City Council to award to a local bidder if their price fell within five percent of the lowest non-local bid. The procurement identified no incumbent vendor, budget range, or set-aside designations. Recent activity under the code shows limited visibility in state and local procurement channels; this fire hydrant replacement solicitation is the most recent documented opportunity.