The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: tv175 on 08.09. 2012 07:32

Title: 7/8 11 B.S.F.
Post by: tv175 on 08.09. 2012 07:32

   
7/8 11 B.S.F. whether the same thread as the 7/8" x 11 TPI UNC. I need the crankshaft oil plug thread.

Best regards, Tapani

Title: Re: 7/8 11 B.S.F.
Post by: duTch on 08.09. 2012 09:40

Tapani,
 7/8" BSF is 11tpi @55˚,
 
7/8" UNF is 14tpi @60˚,

 SRM have the socket hex plugs, best option..!
 Cheers duTch

Title: Re: 7/8 11 B.S.F.
Post by: duTch on 08.09. 2012 09:45

Tapani,

 7/8" BSF is 11tpi @55˚, which I'm sure is the plug size.
 
7/8"UNC is 9 tpi  @60˚

7/8" UNF is 14tpi @60˚,

 SRM have the socket hex plugs, best option..!
 Cheers duTch