Laser Tools has just launched a new range of wheel nut torsion sockets, which eliminates the problem of over tightening.
Strictly speaking an impact wrench is designed to loosen fixings rather than tighten them, but with wheel nuts it is very tempting to speed things up by using the impact wrench to refit them, and of course this leads to over tightening.
Wheel nuts are safety critical and should always be tightened with a torque wrench, and aside from the obvious problem that over tightened nuts may be difficult (or impossible) to undo, there is always the danger of stripped threads, or wheel studs and bolts stretching and becoming brittle.
Laser Tools’ wheel nut torsion sockets (part number 6679) solve this problem. They are ½-inch drive, designed to be used with an impact wrench and limit the torque applied to 80 lb/ft (108 Nm). This prevents over tightening and then a torque wrench is used for the final tightening to the manufacturer’s specified figure.
The set of three includes 17, 19 and 21 millimetre sockets, the most common wheel nut sizes. The thin-walled design and soft plastic covers protect the alloy wheel and the sockets are manufactured from chrome molybdenum steel for excellent strength and wear resistance.
More details from www.lasertools.co.uk