UNSPSC 31171716: Herringbone gear

Type of gear with two opposing helices to transmit power and motion between parallel axes. The mirrored halves of the gear face have teeth that resemble an arrow head or the letter V.

UNSPSC 31171716 Herringbone gear (Commodity) covers rotating power-transmission equipment—specifically gearboxes, sprockets, and reducer assemblies—that state and local governments buy for water treatment and reclamation infrastructure, environmental resource management, and facility operations. Recent solicitations show state and local agencies procuring complete gearbox assemblies with taper bushings, individual sprockets for fish-screen systems, and polymeric drive chains as replacement or new-installation components for operational equipment. The work is transactional procurement of off-the-shelf or light custom industrial mechanical parts, typically via quotation or informal written quote rather than full design or build services. Issuing bodies span county governments (Hillsborough County, Gwinnett County, DeKalb County), state natural-resource agencies (Oregon Department of Fish and Wildlife), and municipal engineering departments (City of Madison), with water reclamation and environmental-management agencies accounting for the largest share of recent activity.

The code shows recent activity in Florida, Georgia, and Oregon. Hillsborough County (Florida) issued an Invitation to Quote in April 2026 for two Dodge taper bushed reducer gearboxes and four taper bushing kits—$30,400 estimated—with delivery to the Northwest Water Reclamation Facility. Gwinnett County (Georgia) posted an Informal Written Quotation in July 2026 for 150 units of polymeric chain (REXNORD NH78 or equivalent) with a due date of August 5, 2026, delivery FOB to its Department of Water Resources Central Facility in Lawrenceville. The Oregon Department of Fish and Wildlife has issued multiple intermediate procurements under state procurement rules: one in June 2026 for John Day Screen Shop gearbox components (Hub City gearbox left and right cradles and paddlewheel assemblies, ten units each, delivery by August 13, 2026) and another in July 2026 for fish-screen sprockets. These opportunities are small-dollar, short-cycle procurements typical of maintenance and replacement purchasing by public utilities and resource-management agencies.