I'll dig out mine and check with a thread gauge, will take some time to find both! David
Oh, well external dia of thread is ½ inch, but neither my metric or un thread gauges match! It's less than 20 tpi, and coarser than 1.75, angle similar to metric. I reckon 16 tpi, if any one can do Whitworth or BSF that might help. David
Originally Posted by Ragle Jnr
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