glockstr Posted July 27, 2014 Report Share Posted July 27, 2014 I have a previously sporterized M94 carbine and I plan on threading the barrel for a flash hider. The barrel diameter is 19/32. Is this enough to thread for a 5/8-24 birdcage or is there not enough"meat" for the 5/8 threads? I also have a hk94 flash hider that I believe is 15mm but I would have to cut the back off of it and I prefer the birdcage. Quote Link to comment Share on other sites More sharing options...
Dr.Hess Posted July 27, 2014 Report Share Posted July 27, 2014 What is 5/8-24 thread pitch? Are you sure about that? I don't think that's a standard thread pitch. Quote Link to comment Share on other sites More sharing options...
glockstr Posted July 27, 2014 Author Report Share Posted July 27, 2014 Most of the 7.62 flash hiders I see say thy are 5/8-24. Maybe I am wording it wrong? http://www.inoxarms.com/products/a2-bird-cage-flash-hider-7-62-308-threaded-5-8x24 Quote Link to comment Share on other sites More sharing options...
Dr.Hess Posted July 27, 2014 Report Share Posted July 27, 2014 Oh, a 7.62 flash hider. OK, I see that now. When you said birdcage, I thought standard AR15 birdcage and 5/8-24 is pretty oddball. Anyway, according to http://www.fastenersinc.com/Images/fasteners_tap_drill_chart.pdfhttp://www.fastenersinc.com/Images/fasteners_tap_drill_chart.pdf 5/8-24 minor diameter (the cut part, or minimum diameter part of the bolt/barrel in this case, or the inside diameter of the nut) is 0.580". Your barrel is 0.594". That's not going to thread 5/8-24 with any kind of useable thread. M15 might work, if you can get the die started on the end. M15 has a minor diameter of 0.551". The major diameter is 15mm, or 0.590", so that part is pretty close to your 0.594. The die should cut that last 2 thousandths radius off. Quote Link to comment Share on other sites More sharing options...
glockstr Posted July 27, 2014 Author Report Share Posted July 27, 2014 Great, thanks! Quote Link to comment Share on other sites More sharing options...
AzRednek Posted August 6, 2014 Report Share Posted August 6, 2014 Great, thanks! Don't forget to post pictures when it is completed Quote Link to comment Share on other sites More sharing options...
cowboybart Posted May 30, 2017 Report Share Posted May 30, 2017 9/16-24 is a semi standard thread pitch, as is 1/2"-28. Is this a 7mm, 30 cal, 6.5??? I would go 1/2-28 (if you are 7mm or smaller) then you can get adapters to go up to 5/8-24 Quote Link to comment Share on other sites More sharing options...
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