UNSPSC 31163015: Oldham coupling

A type of coupling consisting of a pair of disks, one flat and the other hollow, both pinned to the ends of the shafts.A third, center disk with a pair of lugs projecting from each face of the disk fits into the slots between the two end disks and enables one shaft to drive the other shaft.

UNSPSC 31163015 Oldham coupling, a Commodity code, nominally describes a specific mechanical coupling component, but recent state and local solicitations tagged under this code do not reflect direct procurement of couplings. Instead, the opportunities posted show water district and county government bodies soliciting broad repair, rebuild, and replacement services for pumps, motors, and information technology infrastructure where couplings may be incidental components within larger mechanical or electrical systems. West Basin Municipal Water District's on-call pump and motor repair RFP includes comprehensive rebuild work on electric motors ranging from 1.5 to 800 horsepower and various pump configurations across multiple recycled water facilities, with an 18-month warranty on parts and labor; DeKalb County's ITB for tennis center reconstruction specifies IT and low voltage infrastructure installation with cabling and conduit work. The issuing bodies soliciting under this code span municipal water districts and county governments with facility and infrastructure management responsibilities. Pricing structures in the water district opportunity are fixed-cost-plus (10% markup on contractor parts, 5% on subcontractor costs), with a $1,000,000 not-to-exceed over two years plus potential one-year extension, and contractor qualifications require five years' experience, California Public Works registration, and local repair facilities.

Recent activity appears concentrated in California and Georgia. West Basin's October 2026 on-call services RFP (due October 1, 2026) covers eight recycled water and pumping facilities in Los Angeles County with a non-mandatory pre-proposal conference held September 16, 2026, and questions due September 23, 2026; the District offers up to 10% price reductions or evaluation-point bonuses for SBEs, LBEs, and VOBEs. DeKalb County's June 2026 ITB for the DeKalb Tennis Center reconstruction (bids due July 13, 2026) addressed IT and low voltage infrastructure for a facility in Decatur, Georgia. The code shows limited recent activity, and the posted opportunities do not clearly establish Oldham couplings as a primary procurement category under this code at the state and local level.