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Cycle thread
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Cycle thread
Hi all, I know it is 26TPI but is it 55 degrees.
Frank
Frank
FrankG- Posts : 57
Join date : 2015-10-11
Age : 64
Location : Alfreton Derbyshire
Cycle thread angle
No, British Cycle threads are 60 Deg. the same as ISO Metric threads and unlike other threads BSF,BSW etc which are 55 Deg.
Cycle 1/4" x 26TPI thread is the same pitch as 1/4 x 26TPI BSF and a 1/4" BSF bolt will go into a 1/4" cycle thread nut, but not the other way round, albeit very slightly slack, other sizes of BSF and BSW are different TPI to cycle , it is just 1/4" where the TPI is the same as Cycle
Cycle 1/4" x 26TPI thread is the same pitch as 1/4 x 26TPI BSF and a 1/4" BSF bolt will go into a 1/4" cycle thread nut, but not the other way round, albeit very slightly slack, other sizes of BSF and BSW are different TPI to cycle , it is just 1/4" where the TPI is the same as Cycle
piston 197- Moderator
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Join date : 2008-08-17
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Re: Cycle thread
Thanks John
Frank
Frank
FrankG- Posts : 57
Join date : 2015-10-11
Age : 64
Location : Alfreton Derbyshire

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