| Hexagon socket head screw |
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| Basic Parameters |
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● Material：GB/T70; DIN912; ASME B18.3, etc. ● Strength level：4.6～12.9; Gr.2～Gr.8 ● Specification：M12-M100(1/2＂-4＂) ● Material：Carbon steel; alloy steel ● Blackening, galvanizing, hot-dip galvanizing, Dacromet, Teflon, zinc-based manganese-based phosphating, etc. |
