UNSPSC 31163222: Square key

Square key is of uniform cross-section and used for power transmission.

UNSPSC 31163222 Square key is a Commodity code describing a specific fastener product that state and local governments procure for maintenance, repair, and construction applications. Square keys — also called square keys or drive keys — are mechanical fastening elements used to prevent relative rotation between a shaft and a hub or pulley, commonly specified in equipment assembly, machinery maintenance, and industrial facility operations. State and local buyers source these keys as component parts for equipment procurement, facilities maintenance contracts, and specialized repair work across departments including public works, transit authorities, utilities, and facilities management.

The available source records do not include recent state and local contract opportunities posted under this code. Without documented solicitations in the recent-opportunities block, no issuing-body mix, geographic concentration, or representative RFP, RFQ, IFB, or ITB notice can be characterized. The code may see infrequent standalone procurement or may be included as a subordinate line item within larger equipment or maintenance contracts that carry a different primary UNSPSC code.