UNSPSC 31161631: Shoulder bolt

A product having the head with a covering metal sheath that enables the bolt to move, slide, and pivot.

UNSPSC 31161631 Shoulder bolt is a Commodity code covering fastening hardware components used across municipal infrastructure, construction, and maintenance applications. State and local governments procure shoulder bolts as component parts within larger construction and equipment-assembly projects rather than as standalone items. The recent solicitation activity under this code reflects their use as consumable or replacement fasteners embedded in capital infrastructure work — specifically, municipal water treatment facility upgrades involving equipment installation, system modifications, and mechanical assembly. Issuing bodies soliciting under this code include municipal utilities and city public works departments undertaking facility improvements and equipment replacements. The code appears to see limited direct procurement attention, with shoulder bolts typically specified as line items or bill-of-materials components within broader RFP and IFB solicitations for construction and mechanical services rather than as standalone fastener purchases.

The City of Lavonia, Georgia, issued an IFB (Sealed Competitive Bid) in April 2026 for Water Treatment Plant 2026 Improvements, with a sealed bid deadline of May 26, 2026, at 10:00 AM. The project encompasses comprehensive modifications to the existing water treatment facility, including modifications to raw water pump stations, installation of new flash mixers and mixing basins, modifications to settling basins and filtration units, upgrades to chemical feed systems, and clearwell storage tank modifications. Shoulder bolts would be specified as fastening components within the mechanical equipment installations and system assemblies required for this nine-month construction project. The procurement is subject to prevailing wage requirements, Davis-Bacon Act compliance, Build America Buy America (BABA) Act material sourcing rules, and 4.0% DBE and women-owned business participation goals. Recent activity under this code concentrates in Georgia, though shoulder bolts as commodity fasteners see demand across water treatment, wastewater, and general municipal infrastructure upgrades nationwide.