Bolt
Hexagon Head
Metric
Black
High Tensile Grade 8.8
Dia: M20
Pitch: 2.5
Length: 140mm
DIN 931
Wrench Size Across Flats: 30mm
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.
