7.62 cal crush washers supposed to be thinner gauge than 5.56?

[Tack14]

Hi everyone, this is my first post outside of the introductions forum.

I'm pretty new to the world of 308 AR's but about to embark on my first build.  I ordered some 5.56 and some 7.62 crush washers, seemed like a good thing to have some of both on hand.  But when the ones I ordered came in I was struck by the significant difference in thickness.

The 5.56 crush washers are significantly thicker/heavier gauge than the 7.62 ones I got from same place.  I tried to get a picture from an angle that shows this well but I am not sure if I succeeded or not.  Basically the 7.62 crush washer is just a little over half the thickness of the 5.56 one and feels lighter too.

Is this normal or do I need to be buying my 7.62 crush washers somewhere else?  🙂

 

Thanks!

Tack14

 

 

[Tack14]

Sorry if I posted this in the wrong place.

[98Z5V]

Looks like DSG Arms was the vendor - they're good.  You can rotate a crush washer 540 degrees - 1.5 turns.  After that, it'll split.  Then you start over with another one.

Don't ever use a crush washer on a muzzle device that will be a suppressor host.  Use shims or peel washers only, there, in that case.

I switched up to Accu-Washers a long time ago, from Precision Armament. 

Edited April 13, 2021 by 98Z5V

[Tack14]

Hi @98Z5V - thanks for the reply.

It is DSG.  They've always been good to work with, just wasn't sure about the washers.   Thanks!

Tack14

[98Z5V]

13 hours ago, Tack14 said:

It is DSG.  They've always been good to work with, j

Amazing to work with.  I'm a very-long-time customer there. 

[Tack14]

Pretty darn good selection of stuff even for 308 (as I am now "interested in" and finding out) and now they are local-ish to me, not too far away at all.