3/8" x 1-1/2"L Square End Undersize Grade 1018 Low Carbon Machine Key

1018 Low Carbon Steel Steel Stock

This is a 3/8" x 1-1/2"L Square End Undersize Grade 1018 Low Carbon Machine Key. The +0.000/-0.002 inch tolerance indicates a precise fit, slightly smaller than nominal. It is used to transmit torque between a shaft and a hub, with the undersize tolerance allowing for easier assembly.

Specifications

End Type	Square
Length	1.5 inch
Tolerance	+0.000/-0.002 inch
Width	0.375 inch

About steel stock

3/8" x 1-1/2"L Square End Undersize Grade 1018 Low Carbon Machine Key is listed under Steel Stock — hot and cold rolled bar, plate, sheet, angle and structural shapes. Steel stock encompasses a broad range of fundamental ferrous materials used in construction, fabrication, and mechanical engineering. These materials are typically available in hot-rolled (HR) and cold-rolled (CR) forms, with CR stock offering tighter dimensional tolerances, improved surface finish, and often higher strength due to work hardening.

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