YHM qd mount threads

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Griz
Silent But Deadly
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YHM qd mount threads

Post by Griz »

Does anyone know the thread specs for a YHM qd mount? I could blueprint them but am hoping someone here has already done it.
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vaeevictiss
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Re: YHM qd mount threads

Post by vaeevictiss »

i believe it is an ACME 8

should be:

Major dia.= 1.030
Minor dia.= .940
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Bendersquint
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Re: YHM qd mount threads

Post by Bendersquint »

vaeevictiss wrote:i believe it is an ACME 8

should be:

Major dia.= 1.030
Minor dia.= .940
My notes match this.
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Griz
Silent But Deadly
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Joined: Mon Mar 06, 2006 6:35 pm

Re: YHM qd mount threads

Post by Griz »

Thanks!

I have never done an ACME thread before. My plan is:
-Turn the Major diameter.
-Grind a HSS bit to the ACME profile
-Feed it in each pass at 14 degrees with the compound until I get to the minor diameter.
-Test fit the mount, if it's too tight, take a little off the sides of the thread unit it fits.
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