文档介绍：NOTE: Save this master file as a new name and than use new file to do the calculations.
Step 1: Define Bolt & Nut (Boss)
Bolt P/N:
Step 2: Plug in values for each area in blue Thread:
Threads per inch Tpi 32 Nut P/N:
1/Tpi P Thread:
Nomal Dia, bolt (mm) Db 6 Application:
Major Dia, bolt (mm) d (min)
Pitch Dia, bolt (mm) d2 (min) 6
Minor Dia, nut (mm) D1 (max)
Pitch Dia, nut (mm) D2 (max) 5
Safety Factor (90%) Fs
Length, Engagement (mm) Le 10
Proof Strength, bolt (MPa) St (min) 200 *
Yield Strength, nut (MPa) Si (min) 200
Torque Coefficient K
Constant pi
Constant tan 30°
Constant tan 60°
* Proof Strength » Yield Strength
a Method 1: Maximum bolt load based upon shear stress in the bolt thread.
Shear Area, bolt (mm2) As
Tensile Load, bolt (N) Ps
a Method 2: Maximum bolt load based upon shear stress in the internal thread.
Shear Area, nut (mm2) Ai
Tensile Load, nut (N) Pi
a Method 3: Maximum bolt load based on tensile failure of bolt.
Tensile stress area, bolt At
Tensile load, bolt (N) Pt
a Result: Maxi