This part of ISO 8662 specifies a laboratory method for measuring vibrations at the handles of wrenches, screwdrivers and nut runners with impact, impulse, rapping or ratchet action. It is a type-test procedure for establishing the vibration value at the handles of the power tools when operating on a specified load.

This part of ISO 8662 mainly covers power tools with 6,3 mm to 40 mm (1/4 in to 1 1/2 in) male or female square-drive output shafts; other drive geometries are also included. One-shot tools and stall-torque-type ratchet wrenches are excluded from this part of ISO 8662.

The power tools covered by this part of ISO 8662 may be pneumatically or hydraulically driven.

It is intended that the results be used to compare different power tools or different models of the same power tool. With the operation specified for the power tools, the values obtained will give an indication of those found in real work situations when the power tool and the head of the fastener are well aligned.