National Hardware 5/16 in. x 12 in. Square Key Stock

The National Hardware 5/16 in. x 12 in. Square Key Stock is precision manufactured to serve as a reliable locking device or wedge within shaft keyways, facilitating efficient torque transmission between motors, shafts, and machinery components. Its square profile and smooth edges make it easy to cut or drill to the exact custom shapes required for your application. Constructed from durable steel with a protective zinc finish, this key stock provides dependable strength and corrosion resistance for lasting performance across mechanical, industrial, and agricultural projects.