I was surprised to find that the 3/8" UNF HT bolts holding the UJ saddles on my JCB propshafts are 12 point.
Now a standard Imperial 3/8 12 point socket seems to fit OK but IS this correct or is the profile of the points something special ? They need quite a high torque so I don't want to round off the heads !
Tending to work on older stuff this is actually the first time I've had to work on 12 point bolt heads !
Now a standard Imperial 3/8 12 point socket seems to fit OK but IS this correct or is the profile of the points something special ? They need quite a high torque so I don't want to round off the heads !
Tending to work on older stuff this is actually the first time I've had to work on 12 point bolt heads !