UNSPSC 31163020: Flange coupling

A type of coupling having two separate cast iron flanges. Each flange is mounted on the shaft end and keyed to it.

UNSPSC 31163020 Flange coupling is a Commodity code with minimal recent state and local procurement activity aligned to its nominal scope. The two most recent opportunities posted under this code show little connection to flange couplings as mechanical power-transmission components. West Basin Municipal Water District (Los Angeles County) solicited an RFP for on-call pump and motor repairs, rebuilds, and replacement services — work that may incidentally involve flange couplings but centers on electric motor service (1.5 to 800 horsepower) and pump maintenance across eight recycled water and pumping facilities. DeKalb County, Georgia posted an ITB for information technology and low-voltage infrastructure installation at a tennis center reconstruction, which is unrelated to mechanical coupling hardware or pump systems. The code does not reflect active state and local demand for flange couplings as a distinct product line or service category.

The geographic spread is limited to two jurisdictions. West Basin Municipal Water District (RFP RFPTH0143, due October 1, 2026) represents the only solicitation with tangential relevance to rotating equipment components; the contract carries a $1,000,000 not-to-exceed amount over a two-year initial term and encourages participation from SBEs, LBEs, and VOBEs with up to 10% price reductions for qualifying enterprises. The DeKalb County ITB (PE64400NONST2026000000260, due July 13, 2026) is unrelated. No additional state and local opportunities under this code appear in the source. Business development professionals tracking flange coupling demand should monitor mechanical equipment maintenance and industrial water-treatment solicitations rather than rely on this code's recent activity as a signal of market opportunity.