Steelworks square key stock is a precision-machined steel bar used to lock a pulley, gear, sprocket, or hub onto a shaft so it transmits torque without slipping. Each 12" length cuts down to the exact key length your application needs, and the square profile drops directly into standard ASME B17.1 keyways.

• 5/16" square key stock, 12" long
• Machined to ASME B17.1 standard dimensions for a clean keyway fit
• Zinc-plated low-carbon steel resists surface rust before and after installation
• Standard pairing: shafts 1-5/16" to 1-3/8"
• Medium-duty motors, gear drives, conveyor pulleys, and farm-equipment driveline hubs
• Cuts to length with a hacksaw, bandsaw, or abrasive cut-off wheel

Tip: Bevel the leading edge of the key with a file before driving it into the keyway; this prevents galling the hub bore.