proof stress of 10-32 bolt
proof stress of 10-32 bolt
(OP)
Hi All
I want to calculate the preload of the 10-32 high strength bolt, for which I should put in the formula , the tensile shear area of the bolt , the proof strength of the bolt , and the coefficient.
just wanted to know if I have found the right numbers : 0.02 for the area , 85000 ksi for the proof strength(stress) and 0.89 for when it's not gonna re open. so it's 1513 lbs , is this a reasonable quantity ?
I want to calculate the preload of the 10-32 high strength bolt, for which I should put in the formula , the tensile shear area of the bolt , the proof strength of the bolt , and the coefficient.
just wanted to know if I have found the right numbers : 0.02 for the area , 85000 ksi for the proof strength(stress) and 0.89 for when it's not gonna re open. so it's 1513 lbs , is this a reasonable quantity ?





RE: proof stress of 10-32 bolt
RE: proof stress of 10-32 bolt
Link
RE: proof stress of 10-32 bolt
If you want to reuse the bolt or screw you tighten it to 75% of the yield stress value, converse if the bolt is never to be reused you go to 89% of yield stress for bolt tightening, so that explains the .79 and .89 values.
“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein
RE: proof stress of 10-32 bolt
http://www.holo-krome.com/pdf/Consolidated_Tech_Ma...
Says to tighten a 10 fine thread SHCS to 90 in-lbs which will stress the screw to about 75% yield, and achieve about 2100 lbs clamp load.
There is about 1/2 page of conditional notes for that table.
How much clamping do you need?
RE: proof stress of 10-32 bolt
RE: proof stress of 10-32 bolt
RE: proof stress of 10-32 bolt
RE: proof stress of 10-32 bolt
A.
RE: proof stress of 10-32 bolt
RE: proof stress of 10-32 bolt