UNSPSC 31163024: Flange type flexible coupling

A coupling that drills the diameter of the bolt hole of the main body of the flange slightly large to permit the deviation of the shaft center in a way of inserting the bush and convey the power by fixing the flange with the bolt.

UNSPSC 31163024 Flange type flexible coupling is a Commodity code that covers mechanical coupling components used in motor and pump assemblies. Recent state and local procurement activity under this code shows minimal directly relevant solicitations; the two opportunities posted involve pump and motor repair services and IT infrastructure installation, neither of which centers on flexible coupling procurement as a standalone line item. The West Basin Municipal Water District's on-call pump and motor repairs RFP (RFPTH0143, due October 1, 2026) encompasses electric motor and pump servicing across eight recycled water and pumping facilities in Los Angeles County, with work including pick-up, on-site removal and reinstallation, performance testing with vibration analysis, and eighteen-month warranties on parts and labor. The scope suggests that coupling components may be replaced incidentally during motor and pump rebuilds, but the solicitation does not isolate flexible couplings or similar mechanical components as a distinct procurement category. The DeKalb County ITB for the DeKalb Tennis Center reconstruction (PE64400NONST2026000000260, due July 13, 2026) focuses on IT and low voltage infrastructure installation and bears no connection to mechanical coupling procurement.

Issuing bodies soliciting work involving motor and pump services remain primarily water districts and municipal governments in the Southeast and West. West Basin is the standout repeat buyer visible in recent state and local activity under or adjacent to this code, though the sample is too limited to characterize broader issuing-body patterns. Geographic concentration is not evident from the two opportunities posted; West Basin operates in California while DeKalb County is located in Georgia. The code shows sparse recent activity directly targeting flexible coupling procurement at the commodity level, suggesting that state and local governments acquire these components either as bundled elements within larger motor or pump service contracts or through cooperative purchasing vehicles rather than as discrete solicitations.