12.9 Steel M3-M12 Hex Socket Cap Head Screws Bolt + Spring Washer + Plain Washer

Grade 12.9 SteelM3, M4, M5, M6, M8, M10, M12 Coarse Thread. ● Thread Size: M3, M4, M5, M6, M8, M10, M12. Hex Socket Allen Socket Cap Head Screws Bolts. ● Screws Head Style: Hex Socket Allen Socket Cap Head （Knurled design，Non-slip.

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