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The Range
Firearms Chat
OFFICIAL January '16 AR15 build party thread!
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<blockquote data-quote="NikatKimber" data-source="post: 2831802" data-attributes="member: 423"><p>The Bolt catch threading might be a little more difficult to do by hand, but the takedown hole should be pretty easy. IIRC, #4-40 is the right thread size for that.</p><p></p><p>tr, threads are designated by a "size" and "pitch", or in the case of US (SAE) threads, a threads per inch "tpi".</p><p></p><p>size-tpi</p><p>#4-40</p><p>#8-32</p><p>#10-32</p><p>1/4-28</p><p></p><p>So for the thread size NightShade mentioned, the only other information you need is the length.</p></blockquote><p></p>
[QUOTE="NikatKimber, post: 2831802, member: 423"] The Bolt catch threading might be a little more difficult to do by hand, but the takedown hole should be pretty easy. IIRC, #4-40 is the right thread size for that. tr, threads are designated by a "size" and "pitch", or in the case of US (SAE) threads, a threads per inch "tpi". size-tpi #4-40 #8-32 #10-32 1/4-28 So for the thread size NightShade mentioned, the only other information you need is the length. [/QUOTE]
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OFFICIAL January '16 AR15 build party thread!
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