Rear Axle/ Gearbox Flange Axle Nut MGB/MGC/V8 3 synch/4 synch Overdrive Gearbox BTB 753

Item 28 on the attached schematic

‘Coneloc’ superior all metal retainer which unlike the nyloc is not affected by heat or oil and it is also the correct spanner size of 1.1/8″

Note that this nut is the correct 3/4 depth and NOT the full nut which is often supplied where it is too deep for the Nyloc section to engage the thread so won’t lock (see images)