M4 M5 M6 M8 CAP SCREWS SOCKET ALLEN KEY BOLTS A4 MARINE GRADE STAINLESS STEEL
M4, M5, M6, M8, M10 Socket Cap Screws. A4 Stainless Stee l. Allen key size; 3mm. Allen key size; 4mm. Thread pitch; 0.7mm. Allen key size; 5mm. Thread pitch; 0.8mm. Screws up to 22mm long are fully threaded .