Sprung Hub Rear Brake Pivot Castle Nut
Triumph Part Number: W743
Castle Nut to fix the rear brake anchorage to the spindle on Triumph pre-unit sprung hubs; rear spring wheel brake.
This is for rigid frame models with a sprung hub only.
Up to 1954 including 3T, 5T, 6T, T100, T100c, TR5 etc.
Sized as original and bright zinc plated. 1/2″ 20tpi cei cycle thread.
The nut is machined on a lathe and is really high quality.