Originally Posted by Arwyn Williams
Correct

Pre 1996 used 3/8 BSF, post 1996 used 3/8 UNF.

3/8 BSF has 20 tpi , 3/8 UNF has 24 tpi

Arwyn
Thanks for that Arwyn. Useful info.

Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900