UNSPSC 31391700: High precision machinings

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

UNSPSC 31391700 High precision machinings is a Class code covering specialized manufacturing and machining services, though the recent state and local activity tagged under it shows a significant mismatch: the sole posted opportunity concerns the procurement of finished fire hydrants as commodities, not machining services. The City of Midland, Texas, acting on behalf of Mason County, solicited 71 fire hydrants (45 four-foot units, 20 five-foot units, and 6 six-foot units) conforming to attached technical specifications. State and local governments using this code appear to include municipalities and counties acquiring specialized equipment or components, though the posted record provides limited visibility into the full range of work actually performed under the classification.

The fire hydrant procurement posted March 26, 2026, with an April 9, 2026, deadline through an IFB notice (Solicitation 26003721) in Texas represents the only recent documented opportunity. Bidders were required to submit itemized pricing, descriptive literature, delivery timeframes, and brand identification through the City of Midland's Bonfire e-procurement system, with F.O.B. delivery prepaid and included in bid price. Texas Local Government Code Section 271.9051 local preference provisions applied, allowing the City Council to award to a local bidder if pricing fell within five percent of the lowest non-local bid. The procurement documents identified no incumbent vendor, award value, or budget range. The geographic spread and issuing-body concentration cannot be reliably characterized from a single opportunity; the mismatch between the Class code's nominal scope and the fire hydrant commodity procurement suggests either a classification anomaly or limited recent activity in the high-precision machining work this code is intended to capture.