Thread Size: M10 x 1.5mm Thread Type: Metric Coarse Pitch Head Type: Hexagon Head (Part-Threaded) Drive Type: Spanner / Socket (17mm AF) Grade: 10.9 High Tensile Steel Finish: Black (Self Colour) Nuts: Supplied with matching M10 Grade 10.9 Hexagon Full Nuts (DIN 934) Additional Information: - Part-threaded shank leaves a plain section below the head, increasing shear strength in clamping applications - Grade 10.9 high tensile steel suited to structural and load-bearing fixings - Hexagon head and nut allow tightening with a standard spanner or socket - Black self-colour finish — not to be confused with black zinc plated