National Hardware 3/8 in. x 12 in. Square Key Stock

The National Hardware 3/8 in. x 12 in. Square Key Stock is engineered for dependable performance in mechanical power transmission applications. Designed primarily to act as a wedge or locking mechanism within mating shaft keyways, it reliably transmits torque between drive shafts and rotating components such as gears, pulleys, and sprockets in motors and machinery. Constructed from durable steel with a protective zinc finish, this square key stock offers enhanced resistance to corrosion and wear. Featuring smooth edges for straightforward installation, it can be easily cut, filed, or machined to custom lengths and shapes to suit a wide range of maintenance, fabrication, and repair needs.