M3 M4 M5 Button Head Screws Black High Tensile 10.9 Hex Allen Socket Bolts
Hex drive screws are fastened with the use of an Allen key of a screwdriver with hexagon drive bits. Specs (mm) M3 M4 M5 M6. Socket Screws. Socket Button Screws Black High Tensile 10.9. Machine Screws.