6-Million Garand - Correct Bolt Heat Lot

[Jay Johnson]

Picked this 6-mill receiver up off GB a few years ago and been setting parts aside for it, it's in 98% original condition. I have a NOS 65-series bolt set aside for it with a Y02 heat lot, the references I have show that the bolt heat lots for 6-mill receivers can be Z4B, Y01 or Y02 but none of the references really nail down which heat lot is the right one. Recently I purchase a NOS 65-series bolt with heat lot Z4B and there lies my delema, which heat lot is the most correct? Yes, I know I can use either one and be correct, but a more knowledgable/advanced collector might by able to nail it down for me, so that's why I'm here. What is the most correct bolt heat lot for my serial number?

Jay Johnson

(Why do I have a feeling it's going to be Y01 )




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[1563621]

SA Bolt 6528287-SA Z4B January/1955 to December/1957 6080000 - 6100500

[1563621]

there you go!!

[Jay Johnson]

SA Bolt 6528287-SA Z4B January/1955 to December/1957 6080000 - 6100500

Awesome! The Z4B bolt I have is the better finish match to the receiver, win-win

Thanks for the information, where does it come from, 1563621?






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[1563621]

Welcome to USRIFLECAL30M1.com

[Jay Johnson]

Great resource, thanks for the link!

[JimF]

. . . . But the lot number, YO2, is listed there for the exact same serial number range!

I think EITHER is then "correct". --Jim

Additional info:
My 60947xx, Type 1 NM, has the YO1 bolt.

[leemozoid]

6099665 and 6099666 both have YO bolts.

[Jay Johnson]

6099665 and 6099666 both have YO bolts.

Y01 or Y02 bolts?


6001819, 6082546, 6096021, 6100499 all have Y01 bolts

[rkohut]

IIRC, the Y02 is the most common and generally considered to be 'the' 6 mil bolt, along with limited Y01 and Z4B examples.

[leemozoid]

Y01 or Y02 bolts?


6001819, 6082546, 6096021, 6100499 all have Y01 bolts

Y02

[M1Garandy]

I saw a 6,096,XXX recently that had a Y01 bolt. I've seen several other 6.09 millions with Y01's too.

[2111]

I have 6097560 with receiver heat lot Z15B. It is a Type 1 NM and has a Y01 bolt.

[2111]

I just looked at a list of 100 6 mil rifles. 43 of the rifles have either Y01 or Y02 bolts. Of these 43 rifles, 39 have Y01 and 4 have Y02.
Of the other 50 or so, the bolts are a mix. I know 100 rifles out of 22,500 is not much of a sample but take it for what it's worth.

6099665 (Z16A), 8-56 barrel has a Y02 bolt
6100499 (Z16A), 8-56 barrel has a Y01 bolt

[ismith]

6098019 has a YO2 bolt.

http://s739.photobucket.com/user/madisonvalleywapiti/media/DSC_0233.jpg.html?sort=3&o=1