UNSPSC 31161640: Hook bolt

A bolt that has a hook shaped head.

UNSPSC 31161640 Hook bolt is a Commodity code that frames fasteners used in water infrastructure and utility construction, though recent state and local opportunities under this code show minimal direct bolt procurement. Instead, water utility jurisdictions are soliciting comprehensive facility upgrades and equipment procurement in which hook bolts and related fasteners function as component materials rather than primary line items. State and local buyers under this code include municipal water utilities and water districts managing treatment capacity expansion and infrastructure modernization. The City of Lavonia, Georgia and the Eastern Municipal Water District in Riverside County, California represent the primary issuers in current activity, reflecting the concentration of water utility capital spending in the Southeast and California.

Recent opportunities in this space include the City of Lavonia's sealed-bid IFB for Water Treatment Plant 2026 Improvements (posted April 24, 2026, due May 26, 2026), which encompasses modifications to raw water pump stations, installation of new mixing basins, renovation of filtration units, and upgrades to chemical feed and clearwell storage systems across a nine-month construction schedule, with pre-bid scheduled for May 7, 2026, and a 4.0% DBE participation goal; and the Eastern Municipal Water District's RFQ 3930 (posted March 17, 2026, due March 20, 2026) for Lineseal XP 36" Butterfly Valves Class 250B with gasket and bolt nut sets, delivered F.O.B. to the District's Perris, California warehouse. Activity is concentrated in California and the Southeast, with Georgia and Riverside County as standout recent procurement locations. The code shows sparse standalone fastener solicitation; hook bolts appear primarily as component specifications within larger equipment or construction packages rather than as discrete procurement items.