New Triumph and BSA unit singles mainshaft nut tab washer. Tab washer is made in England to replace part number 57-2685, T2685 and 40-3257. Fits all BSA unit singles (C15, B40, B25, C25, B50, etc) from 1958-1973 and also Triumph unit singles (TR25W Trophy, etc) from 1968-1973. Check your parts book to ensure the best fitment.
- Zinc plated
- Made in England
- Replaces part number 57-2685, T2685 and 40-3257