unusual M1 parts and drawing numbers

[RCS]

A few examples of some parts that are not really rare but not often found.

note the revision 2 triggers

I believe the revision 2 bolt with the heat lot B1 is the first heat lot issued ?Attachment 58404Attachment 58405Attachment 58406Attachment 58407

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[SA M1Dom]

I have never seen the triggers. I have a 2 SA B1 bolt on my 42 springfield

[RCS]

The revision 2 bolt heat lot B1 is from mid 1940, what month in 1942 is your M1 ?

[SA M1Dom]

I had the revision 2 bolt a while. It was on my 45 springfield but I replaced it when I restored the rifle. I used it on the 42 when I built it up from a receiver. The B.O.D. on the 42 is July.

[RCS]

Dom, here is some data from a few rifles from that period: s/n 772909 bolt revision 12 heat lot W9B, s/n 755630 bolt revision 12 heat lot W9B, s/n 856914 bolt revision 12 heat lot W9B

[SA M1Dom]

Mine is serial 714937 I had seen somewhere ( can't remember where) that bolts with heat lots of 12 SA RE5B and RE6B were proper also for this rifle's B.O.D. RCS Is it also true that the 2 SA B1 were common through out production, even post war?

[RCS]

All the revision 2 bolts had the hole through the right bolt lug as well as the revision 12 heat lot RE5B bolts - all bolts after that did not have the hole through the right bolt lug. My SA 613219 has a revision 12 bolt heat lot RE5B. I doubt that continued production of the revision 2 bolt heat lot B1 with the hole through the right bolt lug would have continued with all the revision 12 variations being produced

[SA M1Dom]

The bolts have always been a source of confusion at times for me. I know certain rifles depending on their dates of manufacture could have had a large range of different bolt heatlots could be proper for th them.

[Bob Seijas]

First rifle assembled with hole in the bolt lug was on April 29, 1940.

[SA M1Dom]

Now I'm guessing the hole was for lubricating the bolt internals?