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Disc Nut! Will these threads strip?

Disc Nut! Will these threads strip?

Disc Nut! Will these threads strip?

(OP)
I'm dealing with a material change of a disc nut to be made of 630 AL-BRZ(Yield Stress-40000 PSI).  The Nut is         2-(7/8)"-12UNC.  At max shear stress, what is the max force and torque that can be applied to threads before failure.  
Nut height-1-(5/8)"

RE: Disc Nut! Will these threads strip?

If you want max force/torque, you need to provide ultimate strength (shear is best, tensile if that is all you have).

RE: Disc Nut! Will these threads strip?

check out the formulae in  ASME B1.1-1989 "Unified Inch Screw Threads," App. B for thread strength

RE: Disc Nut! Will these threads strip?

(OP)
I have a tensile strength of 90 ksi.  The problem is were changing from NIALBRZ to 630 Alumnium Bronze which is slightly weaker.

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