※ Head shape: hexagon with flange. ※ Sizes: M3 M4 M5 M6. A2 stainless steel is commonly referred to as 304 or 18/8 because it contains 18% chromium and 8% nickel. A2 is an austenitic stainless steel and almost non-magnetic, but adheres easily to a magnet due to the cold forming process.
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