BUTTON HEAD SCREWS ALLEN SOCKET BOLTS M1.6 to M10 A2 STAINLESS STEEL DIN 7380
Standard：DIN 7380. Bolt Size：M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10. A2 Stainless SteelButton Head Allen Screws. A2 stainless is commonly referred to as 304 or 18/8 because it contains 18% chromium and 8% nickel.