bolts size
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Re: bolts size
Hi, I have come a bit late to this, but BSC threads are NOT a BSF/Whit thread form. They have a 60degree thread angle, whereas BSF/Whit threads are 55 degrees. They do, however, all use the same hexagon sizes, but are most definitely not interchangeable. AMC used BSC on nearly all steel/steel fastenings, BSF on steel into alloy or cast iron, BA for small stuff and a few special threads for things like big end nuts that wise men leave alone! Cheers, Andy
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Re: bolts size
I will probably get my wrists slapped here but 1/4" BSF and 1/4" British Standard Cycle thread are close enough to interchange on non crical components, both being 26 TPI. The 5 degree difference in thread angle does not make a lot of difference.
The TPI is different in all other sizes.
Jim
The TPI is different in all other sizes.
Jim
Too old to Rock and Roll but too young to die.
1952 G80 rigid, 1960 G12 DL / Watsonian Monza, 1954 G80S.
1952 G80 rigid, 1960 G12 DL / Watsonian Monza, 1954 G80S.
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Re: bolts size
I am with you Jim, (also expects a slap) a few degrees don't make much difference and the quality of threads these days you wouldn't notice. So lets not get into peak chamfers, root rads and effective dia.
Colin
Colin
only dead fish go with the flow