Apologies chaps. Specsavers apptmt way overdue!dodger wrote:They look coarse because the picture is blown up for clarity, that thread is most definitely 1/4 Bscy.
Here are three 1/4 inchers - WW, BSF and BSC from l to r . .
Grovel grovel.
Apologies chaps. Specsavers apptmt way overdue!dodger wrote:They look coarse because the picture is blown up for clarity, that thread is most definitely 1/4 Bscy.
1/4" BSF and Cycle are both 26TPI and both of the Whitworth form - ie the threads are 55 degrees - so they are the same.Are these bolts Cycle or BSF? My sheet implies BSF, but I'm not certain. Both are 26 tpi!