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T O P I C R E V I E W
Foghorn	Posted - 28 May 2014 : 7:47:07 PM Ok! I'll play BSA's silly game. Who can tell me what thread is used on the B31 (1951) plunger carrier tube- the one that the top plug screws into? Mine is 0.861"OD and 20 TPI. If I accept that it is 7/8" OD nominal, what thread system has 20 TPI for 7/8" diameter? Where can I buy borrow or hire a die nut and tap for such an one? It is almost metric 2.5 pitch, but there is no 22 mm thread in the metric system. 3/4" BSC (cycle) can be 20 TPI, but I have not seen it in 7/8". All advice (and abuse) greatfully accepted. Foghorn
2 L A T E S T R E P L I E S (Newest First)
Foghorn	Posted - 31 May 2014 : 5:33:28 PM Thanks Mick.
matcho mick	Posted - 29 May 2014 : 11:24:34 PM http://www.stevenott.com/bsatrinbw.htm knock yourself out ,

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