Metric machine keys, also referred to as DIN or ISO keys, are machine keys that have metric dimension rather than imperial or English measurements so you will see millimeters instead of inches or fractions.

Metric machine keys function in the same way that other keys do. They connect a rotating machine element to a drive shaft so that torque can be transmitted.

Square Key Steel

Square key steel chart

Dimensions in millimeters.
The values of mass given in the tables have been calculated from the cross section on the basis of a specific gravity of 7,85 kg/dm3.

Rectangular and Flat-Rectangular Key Steel

Rectangular key steel chart


Dimensions in millimeters.

For more information about our Metric machine keys, call us today at 724.846.4660 or click here to contact us.