Hi Could any member tell me what the thread size is for the Mills No36 Grenade rod and gas check please
Cheers
Andy
Cheers
Andy
Last edited:
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Base plug thread
- Thread starter Andysarmoury
- Start date
Looking through threads for this and found this posted by Snufkin so added here for other searchers,,,,,,,,Dave
For the majority of No.23 base plug holes for rifle rod and all No.36 MkI base plug holes for gas check, the required tap size is 9/32" 20 tpi BSW form, though when rethreading it's important you get a plug tap, rather than taper or second cut.
The less common Morum No.5 threaded base plugs (and some No.23 MkIs) use a standard cycle thread of 5/16" 26 tpi.
For completeness, should you want to rethread the No.5 or Nos.23 MkI & II filler holes the thread is 7/16" 20 tpi BSW form, and for the No.36 is 9/16" 20 tpi BSW form.
Finally the base plug thread is 1.25" 20 tpi BSW form.
For the majority of No.23 base plug holes for rifle rod and all No.36 MkI base plug holes for gas check, the required tap size is 9/32" 20 tpi BSW form, though when rethreading it's important you get a plug tap, rather than taper or second cut.
The less common Morum No.5 threaded base plugs (and some No.23 MkIs) use a standard cycle thread of 5/16" 26 tpi.
For completeness, should you want to rethread the No.5 or Nos.23 MkI & II filler holes the thread is 7/16" 20 tpi BSW form, and for the No.36 is 9/16" 20 tpi BSW form.
Finally the base plug thread is 1.25" 20 tpi BSW form.
