Metric & Imperial Gib Head Keys

The tapered key is tapered only on the side that engages with the hub. The keyway in the hub has a taper that matches that of the tapered key. Some taper keys have a gib, or tab, for easier removal during disassembly, hence the name Gib Head Keys

See our Taper Key Dimensional Charts.

The purpose of the taper is to secure the key itself, as well as, to firmly engage the shaft to the hub without the need for a set screw. The problem with taper keys is that they can cause the center of the shaft rotation to be slightly off of the mating part. It is different from a tapered shaft lock in that tapered keys have a matching taper on the keyway, while tapered shaft locks do not.

The charts below gives the dimensions for Gib Head Keys and Keyways to DIN 6887and BS46.

Dimensions shown are in Inches and mm, if you wish to convert them please use our universal converter.

GIB HEAD KEYWAYS AND KEYS - DIN 6887