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Hex Head Bolts ISO 4014 (DIN 931) M33 in A4-80 Stainless Steel

The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. Manufactured to ISO 4014 or DIN 931, and therefore includes an unthreaded section of the shaft. A hex drive permits a greater torque load to be applied to the joint over most other drive types.
Hex Head Bolts ISO 4014 (DIN 931) in A4-80 image
technical drawing of Hex Head Bolts ISO 4014 (DIN 931)
Technical Summary
d thread diameter M33
b <= 125 thread (bolt lengths <= 125) 72
b > 125 thread (bolt lengths > 125) 78
s drive size 50
k min. minimum head height 20.58
e width across corners 55.37
Standard ISO 4014 (DIN 931)
Material A4-80 Stainless Steel
all dimensions in millimetres (mm)
datasheet
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technical drawing of Hex Head Bolts ISO 4014 (DIN 931)
Technical Summary
d thread diameter M33
b <= 125 thread (bolt lengths <= 125) 72
b > 125 thread (bolt lengths > 125) 78
s drive size 50
k min. minimum head height 20.58
e width across corners 55.37
Standard ISO 4014 (DIN 931)
Material A4-80 Stainless Steel
all dimensions in millimetres (mm)
datasheet