15-100pcs M2 M2.6 M3 M3.5 M4 M5 M6 Grade 8.8 Black Carbon Steel Hex Socket Hexagon Cap Head Self Tapping Screw Allen Head

15-100pcs M2 M2.6 M3 M3.5 M4 M5 M6 Grade 8.8 Black Carbon Steel Hex Socket Hexagon Cap Head Self Tapping Screw Allen Head

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