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 Inland
 Flat bolt
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Gunny0369
Starting Member


10 Posts

Posted - 04/25/2018 :  12:35:45 PM  Show Profile Send Gunny0369 a Private Message  Reply with Quote
Gentlemen, I have an inland serial number 68,xxx with a flat bolt. Should I get a round one and have it headspaced? I have heard of flat bolts cracking. If so what do I need to know about finding the proper round bolt. Can I check headspace myself. If tool is needed I will buy one.

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Jackp
Veteran Member



USA
1061 Posts

Posted - 04/25/2018 :  1:27:06 PM  Show Profile Send Jackp a Private Message  Reply with Quote
A flat bolt is no more likely to crack than a round one. Perhaps you heard of the early bolts without the web of metal behind the extractor. They were the very first design and only a few found their way into production. They were quickly replaced when cracking was reported and are extremely rare to find. If you do choose to replace your flat bolt, definitely have the headspace checked.

JackP
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americanboy
Advanced Member



USA
363 Posts

Posted - 04/25/2018 :  1:46:11 PM  Show Profile Send americanboy a Private Message  Reply with Quote
The only thing I have every read about or experienced concerning flat-bolts is don't trust an N14 (National Postal Meter). I have had one crack and you can search-out plenty of discussion about the N14 and it's problems. I have never had any other flat bolt to fail.

Edited by - americanboy on 04/25/2018 1:48:53 PM
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Gunny0369
Starting Member



10 Posts

Posted - 04/25/2018 :  8:35:06 PM  Show Profile Send Gunny0369 a Private Message  Reply with Quote
Thank you gentlemen for the quick reply.
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Tuna
Moderator



3283 Posts

Posted - 04/27/2018 :  3:53:23 PM  Show Profile Send Tuna a Private Message  Reply with Quote
The round bolt was to help stop bolt breakage as well as to improve bolt performance. Both types of flat bolts can break in the web area where the extractor sits. The type one bolt was replaced very early in production because of breakage. The type two lasted till early 1944 and has been used in rebuilds into the Viet Nam era. The type 3 round bolt became the final standard but if your type 2 bolt is working fine then there really is no need to replace it.
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Gunny0369
Starting Member



10 Posts

Posted - 05/02/2018 :  11:26:15 AM  Show Profile Send Gunny0369 a Private Message  Reply with Quote
I have a very early inland. How do I tell the difference between type 1 and type 2 bolts?
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Jackp
Veteran Member



USA
1061 Posts

Posted - 05/02/2018 :  4:14:59 PM  Show Profile Send Jackp a Private Message  Reply with Quote
See the note on this web page in the section about flat bolts regarding the web being added to the design in 1942.

You must be logged in to see this link.

Type 1 = flat bolt without web.

Type 2 = flat bolt with web.

You can see why it might crack here. BTW, if you have a Type 1 bolt, hang on to it. It could be very valuable as they are very rare.


JackP
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Tuna
Moderator



3283 Posts

Posted - 05/03/2018 :  12:28:09 PM  Show Profile Send Tuna a Private Message  Reply with Quote
Yup like hens teeth they are that rare. Only used at the very most on up to maybe the first 5000 carbines out of Inland if that many. Winchester even a lot less. Most if not all have been replaced by Inland and Winchester and during a rebuild. You would have better luck hitting the lottery then having a type 1 bolt in your carbine.
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Gunny0369
Starting Member



10 Posts

Posted - 05/16/2018 :  10:32:57 AM  Show Profile Send Gunny0369 a Private Message  Reply with Quote
Thanks gentleman. I appreciate your sound knowledge and advice.
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