Locating Gunsmith Taps & Dies
I've been looking for some taps & dies (or thread chasers) for doing some barrel work on some old rifles that I've picked up over the years that are in dire need of better barrels. Finding these for Mausers were no problem but some of the U.S. Military weapons had no information listed that I could find. I tried to mic some of the barrels out and used thread gauges but still have had problems tring to cross ref them that way.
Does anybody know the thread specs for the Springfield 1903 & M1 Garand barrel/receiver are and where I might be able to purchase a tap and die on line?
Does anybody know the thread specs for the Springfield 1903 & M1 Garand barrel/receiver are and where I might be able to purchase a tap and die on line?
0
-
MSC has special dies and I have bought some for my gunsmith shop use.
I have a 03-A3 in the shop now and will measure it tommorow and let you know if somebody else doesn't tell you before then.
CEW0 -
Brownells 0 -
McMaster carr is another source 0 -
snakedriver69,
Welcome to the Gunbroker Forums!
Gunsmiths don't use dies to thread barrels for rifles even if the dies are advertised for that use. Barrel threads are single point cut on a lathe for accuracy and proper fit. You might want to use dies but that's not the way to get the barrel fit properly since each receiver thread might be a tiny bit different.
"Does anybody know the thread specs for the Springfield 1903..."
The threads are termed '10 sq. TPI' or 10 square threads per inch. The tenon length is 0.734" with a diameter of 1.040" approximately. The tenon uses a thread relief 0.990" diameter and has a cone breech of 41 degrees. There is also an extractor groove in the tenon.
You might need to buy a book by Frank de Haas titled 'Bolt Action Rifles'. There is a reference section in the back of the book with many of the common military and commercial action threads.
Best.0 -
One of the other things, along the same line, is I have somehow obtained several M1 Garand receiver castings, in the white that are about 80% finished. They were not listed as part of the lot, have no serial numbers or other markings, but appear to be in good shape. No barrel threading work has been done on any of them to date. I got these when I bought a small lot of surplus and misc. parts for M1 Garands. Hence the inquiry as to the proper tap size and spec's. The related FM's and TM's don't really get into the 'manufacturing' aspects of the weapon, nor do most books available that I've been able to find.
PS: This is not an offer to sell any in the white receivers. I found 'em fair and square.[:D]0 -
snakedriver69,
www.milsurps.com/showthread.php?t=9080
The 80% recievers you mention are by no means a file, tap, & die show to complete regardless of what the merchants said that included them with parts kits for the "do it your selfer".
To complete one properly, it will require a good mill & lathe plus the machinist's skills to run the tools.
The various setups required for one part will run into major time expended. If you were doing 100+ pieces per setup, it might be worth it.
Jim0
Please sign in to leave a comment.
Comments
6 comments