M3 M4 M5 M6 M8 M10 Black Grade 10.9 Steel GB2673 Six Lobe Bolt Six-Lobe Torx Head Flat Countersunk Screw

M3 M4 M5 M6 M8 M10 Black Grade 10.9 Steel GB2673 Six Lobe Bolt Six-Lobe Torx Head Flat Countersunk Screw

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