Bolt
Hexagon Head
Metric
Black
High Tensile Grade 8.8
Dia: M39
Pitch: 4
Length: 180mm
DIN 931
Wrench Size Across Flats: 60mm
The DIN 931 bolt is a widely used metric fastener officially known as a hexagon head bolt with a shank (partially threaded). It is the standard for structural and heavy-duty applications where high shear strength and precise alignment are necessary.
