Thread stripping strength
Internal thread tapped hole:
M1
M1.2
M1.6
M2
M3
M4
M5
M6
M8
M10
M12
M14
M16
M20
M24
M30
Effective length of engagement L
e
(0.75d for standard nut)
mm
Material shear strength Τ = 0.58 Rm
MPa
pitch diameter d
0
=(d
2
+d
3
)/2
mm
tensile stress area A
t
=π/4 d
0
2
mm
2
shear area A
th
= (A
t
/ 0.58)(L
e
/ 0.75d)
mm
2
Shear strength F = T x A
th
kN
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