Bolt Base (6mm) M6 x 50 Black 10.9 Grade High Tensile Hex Socket Countersunk screws Self Colour Allen Bolts DIN 7991 - 10 Pack 10.9 Grade High Tensile Steel, Black (Self Colour) Socket Countersunk - DIN 7991 6mm Metric Thread, M6 - 1.0mm Pitch Length - 50mm Including Head Ideal For High Stress Applications Or For When a High Strength Fastener Is Required