UNSPSC 31391600: Medium precision machinings

Objects that have been machined to tolerances equal to or greater than 0.020 mm for major dimensions

UNSPSC 31391600 Medium precision machinings is a Class code encompassing manufactured metal components and assemblies that require tolerances and finishing work beyond basic stock forms. State and local governments procure under this code primarily fire hydrants and similar cast or fabricated pressure vessels and distribution infrastructure components. The Midland, Texas procurement shows the practical scope: municipalities and county governments buy finished hydrants to specification — complete assemblies ready for installation — rather than machining services or component parts. Issuing bodies under this code span city water departments, county public works divisions, and municipal utilities acquiring capital equipment for water system maintenance and replacement projects. Single opportunities tend to be discrete, project-based purchases with modest quantities rather than ongoing service contracts or blanket orders.

The code shows limited recent state and local activity in the posted record. The City of Midland, Texas, acting on behalf of Mason County, posted an IFB (Solicitation 26003721) on March 26, 2026, for 71 fire hydrants in three standard sizes under the U25-01 Fire Hydrant Replacement Project, with bids due April 9, 2026, through the Bonfire e-procurement system. The procurement specified itemized pricing, delivery to Midland F.O.B. with freight prepaid, and compliance with workers' compensation insurance requirements and Texas Local Government Code preferences. No award value or incumbent vendor was identified. Geographic activity is concentrated in Texas among the recent opportunities, though the underlying activity is likely dispersed across water utilities nationally. The narrow recent-opportunity sample and the project-driven nature of procurement under this code suggest seasonal or episodic demand tied to capital replacement cycles rather than steady purchasing velocity.