Machine Key Form B Carbon Steel Undersize

This is a Machine Key, Form B, with a width of 1 unit, height of 1 unit, and length of 5-1/2 units. It is used to transmit torque between a shaft and a hub, with Form B indicating rounded ends. The undersize specification relates to its fit within a keyway.

Specifications

Form	B
Height	1
Length	5-1/2
Width	1

About keys & keystock

Machine Key Form B Carbon Steel Undersize is listed under Keys & Keystock — square, rectangular, woodruff keys and keystock bar. Keys and keystock are essential mechanical components used to prevent relative rotation between a shaft and a rotating machine element such as a gear, pulley, or coupling. They transmit torque by fitting into keyways machined into both the shaft and the hub.

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