BSA Standard and Light Pattern Fasteners
Ok, so 9 times out of 10 the screws on these old gun are somewhat mangled, and this really makes even a nice gun look tatty. I am thinking about turning up a few replacements for my guns. Can anyone tell me what the threads are? they are obviously not Metric, so I am think probably BA, BSF or even UNF can anyone cast any light on these please. also the piston seal screw what thread is that?
Many thanks in advance
John I suggest you look at these threads for discussion of BSA screws, which were proprietary.