British Hub - What thread

[1340fxd]

I want to renew the nuts and bolts on my Silverstone British Hub full width hubs and brake torque arm bolt - just have no idea what threads they are, other than not BSF! Can anyone help please?

[John Wakefield]

If they are not BSF they may be UNF measure tpi and diameter against this chart https://www.engineeringtoolbox.com/u...nf-d_1809.html

[1340fxd]

Thanks guys but I have tried UNF to replace the brake hub lever nuts and the thread is different. Any other threads used by British Hub, excluding BSF and UNF?

[John Wakefield]

I have just measured the torque arm fixing bolt on my East Coaster (6" single leading shoe) and its 3/8" dia x 26 tpi (British Standard Cycle thread)
So I would assume same thread on the twin leading shoe Silverstone hub.

https://www.motalia.com/Html/Charts/cycle_chart.html

[Dogsbody]

Just checked on the Silverstone and John is correct, BSCY ,Cycle thread. Dogsbody

[1340fxd]

Thank you both - that's very helpful