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Legacy Member
1909 Mauser Trigger Guard Screws
Anyone know the thread/tap size for the screws that attach the trigger guard to a Argentine 1909? One of the screws was threaded incorrectly by the previous owner, and I can't seat the trigger guard properly. I was hoping to rethread and retap it.
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12-26-2009 01:47 AM
# ADS
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Advisory Panel
I just measured on my 1908 Brazilean rifle. Argentine should be the same.
Measured 6.43 on shank, 22 tpi (close) from thread gauge.
Allowing for production tolerances, that sounds like it could have been a nominal 6.5 mm x 1.2 mm pitch in round-number metric units. But no guarantee!
In "The Mauser Bolt Actions" by Jerry Kuhnhausen it says: 0.250" x 22. But because of the shank measurement, which is way over 1/4", I would be a bit cautious in assuming that Mauser used precise inch dimensions. Get someone to thread a piece of rod to 0.250" x 22 and try it!
Patrick
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Thank You to Patrick Chadwick For This Useful Post:
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I think the .250-22 thing came about as a "close enough" substitute that could be made on non metric lathes. However, I'm just a machinist, not a real Mauser guy...
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In the past, I've used Scott Stonehill for hard to find screws ...
Evans Obsolete Screws (click here)
Regards,
Badger
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Advisory Panel
I still find it amazing that I found a 1/4x30 tpi tap and die at a boot sale in York. Guess what they are good for!
Patrick
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Legacy Member
Originally Posted by
Badger
The screws I am good on. Its just a matter or retapping the attachment point on the receiver.
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Originally Posted by
Patrick Chadwick
I still find it amazing that I found a 1/4x30 tpi tap and die at a boot sale in York. Guess what they are good for!
Patrick
So what IS it good for? Something too obvious for my pea brain to dredge up...
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Advisory Panel
1/4" x 30 tpi is good for...
...Lee Metford and Lee Enfield front trigger guard screws, including all SMLE types, also P14 and M1917 (but not No 4 and later - those are 1/4" x26 BSF).
Patrick
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Thank You to Patrick Chadwick For This Useful Post:
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Legacy Member
Patrick- I note you are in Germany. Are there any German gunsmiths who could re-tap that Argy Mauser? Just a thought.
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Originally Posted by
Patrick Chadwick
...Lee Metford and Lee Enfield front trigger guard screws, including all SMLE types, also P14 and M1917 (but not No 4 and later - those are 1/4" x26 BSF)
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Patrick
I knew it would be something obvious. Never had to made or repair any of those, but I've scads of SMLE front screws...
So what about the 1909 Mauser screws? Somebody ought to have all that info squirreled away (that lives in Metricland, that is!).
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