UNSPSC 31161521: Carriage screw

A mushroom-shaped head screw with a square neck, made of steel or stainless steel, this screw is under the DIN standard number 603, it usually includes a hex nut.

UNSPSC 31161521 Carriage screw is a Commodity code that names a fastener component, but the single recent state and local opportunity tagged under it — Harris County Department of Education's May 2026 painting, drywall, acoustical ceilings, and flooring JOC-IDIQ solicitation — shows no connection to carriage screws or fastener procurement. The painting and flooring services described in that solicitation would use carriage screws as an incidental material input rather than a line item for direct purchase. The code shows no current state and local procurement activity focused on carriage screws or fastener supply as a primary service or product offering.

The Harris County Department of Education opportunity, posted May 15, 2026 with a response deadline of May 15, 2026, was a Competitive Sealed Proposal for maintenance and job order contracting services across multiple building trades, with a maximum annual aggregate contract price of $200 million and pre-proposal meetings scheduled for April 15, 2026. However, this solicitation does not represent carriage screw procurement. State and local procurement activity under this code appears dormant or misclassified in the available records; buyers pursuing fastener supply contracts should verify code assignment before responding.