M3 M4 M5 M6 M8 BUTTON HEAD SCREWS ALLEN KEY BOLTS HIGH TENSILE ZINC PLATED 10.9
Button Head Allen Screws. Button head screws with Allen key drive socket. Allen Key Size; 2mm. Allen Key Size; 2.5mm. Allen Key Size; 3mm. High tensile grade 10.9 steel. Allen Key Size; 4mm. Allen Key Size; 5mm.