Standard ANSI Hardware Fastener - Bolt Design Calculations (This calculator requires a java - enabled browser) This calculator calculates the tensile stress area of a external screw thread of a fastener. Use this calculator for materials over 180,000 psi ultimate tensile strength....
nominal bolt stress area according ISO 724 Tensile Stress Tensile stress can be calculated as σ = F / A (3) where σ = tensile stress (psi, N/m2 (Pa)) Example - Bolt Stretching - Imperial Units stud diameter : 7/8 inches thread pitch : 9 Young's Modulus steel : 30×106 psi...
Take the minimum yield in psi of the ASTM grade (see ourStrength Requirements by Grade Chartfor this value), multiplied by the stress area of the specific diameter (see ourThread Pitch Chart). This formula will give you the ultimate yield strength of that size and grade of bolt. Example:W...
"ratio ofstress(force per unit area) along an axis tostrain(ratio of deformation over initial length) along that axis" It can be used to predict the elongation or compression of an object as long as the stress is less than the yield strength of the material. More about the definitions be...
tmin=Minimum tensile strength of the boltgrade, ASTM, SAE, etc. (psi) Ssy= Working axial load of fastener bolt (lbs) a =Stress area of thread(in2) pr= Percent expressed as decimal, e.g. 60% = 0.6 - This is the factor of safety (FOS) for the design application ...