Hex Head Bolts Head Grade 8.8 12.9 DIN 933 Hexagon Heavy Hex Bolt for Machinery

DIN933 is German standard bolt, specification from M1.6 -- M52, length from 2mm -- 200mm. A class of fasteners consisting of a head and a screw (cylindrical body with external threads), to be fitted with a nut for fastening two parts with through-holes.