Hexagon socket head cap screws DIN 912 Aluminium M2x4 M3x6 M3x8 M3x14 Socket set screws DIN 913 Aluminium M3x3 Socket set screws DIN 914 Aluminium M3x6 Hexagon socket countersunk head screws DIN 7991 Aluminium M2x5 M3x8 1 box of each item