### Bolt or Pin In Double Shear Equation and Calculator

Bolt or Pin In Double Shear Equation and Calculator. Keep units consistant when performing calculations. Bolt or Pin Double Shear Stress Applied Force F (N, lbs) = Bolt/Pin Diameter d (mm, in) = Plate Thickness t (mm, in) = Plate Thickness t1 (mm, in) = Ultimate (Yield Min.) Stress  (N/mm2, lbs/in2) = Factor of Safety  = Results Section Area of Bolt/Pin (mm2, in2) = Shear Stress ave Bolt/Pin (N/mm2, lbs/in2) = Bearing Area Stress Bt (N/mm2, lbs/in2) = Bearing Area Stress Bt1 (N/mm2, lbs/in2) = Allowable Stress (N/mm2, lbs/in2) =

Shear Stress Equation Double Shear

Shear Stress Average = Applied Force / Area
or
Shear Stress ave.= F/(2 π r 2)
or
Shear Stress ave.= 4F/(2 π d 2)

Where:
Shear Stress ave = ( N/mm2, lbs/in2)
F = Applied Force (N, Lbs)
π = pi or (3.14157)
d = Diameter (mm, in.)

Bearing Stress Equation

Bearing Area Stress for t Plate and Bolt/Pin

Bt = F / (2 t d)

Bearing Area Stress for Plates t1and Bolt/'Pin

Bt1= F / ( t1 d)

Where:
Bt = Bearing Area Stress Area ( N/mm2, lbs/in2)
Bt1= Bearing Area Stress Area ( N/mm2, lbs/in2)
F = Applied Force (N, lbs)
t = Thickness (mm, in)
d = Diameter (mm, in)

Factor of Safety

Factor of Safety = F.S = ultimate stress / allowable stress

Therefore:

allowable stress = ultimate stress / F.S.

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