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Q threads standards for AR #15973748 04/07/21
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verns Offline OP
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I might need to buy a tap for some of my tinkering . My gunsmith said there are three "standards for screws " I can not recall the initials he used . What is the standard for screws on AR s ?


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Re: Q threads standards for AR [Re: verns] #15973900 04/07/21
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SOFMatchstaff Offline
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Which screw on an AR are you worried about??? They aren't exactly the epitome of the gun makers arts. If He was talking about thread pitch classes, don't sweat it.


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Re: Q threads standards for AR [Re: verns] #15974471 04/08/21
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antelope_sniper Offline
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The only place you will see screws on an AR is for rail pieces on obsolete hand guards, rings, and mounts. Rings and mounts come with the fasteners, but they are almost always Allens or torques, so I'm not too sure what screws you're talking about.


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Re: Q threads standards for AR [Re: verns] #15975208 04/08/21
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AH64guy Offline
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Receiver extension (buffer tube) and pistol grip screw are threaded.

More companies are starting to thread the bolt block pivot pin hole, and at least one (Aero) has threaded the rear receiver take down pin spring hole.

Re: Q threads standards for AR [Re: verns] #15976042 04/08/21
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deerstalker Offline
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many gas blocks also have set screws.


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Re: Q threads standards for AR [Re: verns] #15976760 04/08/21
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verns Offline OP
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Thanks for your replies .I am a very slow typist .i will report and explain when i finish the job .


“To account nothing of one's self, and to think always kindly and highly of others, this is great and perfect wisdom.”
― Thomas à Kempis, The Imitation of Christ
Re: Q threads standards for AR [Re: verns] #15977663 04/09/21
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MtnBoomer Offline
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Awesome thread Q.


Critical thinking not needed.

Re: Q threads standards for AR [Re: verns] #15977790 04/09/21
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kwg020 Offline
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Screws, nuts and bolts ?? Or AN MS or NAS fasteners ?
kwg


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Re: Q threads standards for AR [Re: verns] #15979614 04/09/21
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MtnBoomer Offline
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Get some Q?

1.25"-18

1-3/16"-16


Critical thinking not needed.


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