20-100pcs DIN912 Black Hex Socket Head Caps Bolt Screw M1.4 M1.6 M2 M2.5 M3 Grade12.9 Carbon Steel Allen Hexagonal Head Screws

20-100pcs DIN912 Black Hex Socket Head Caps Bolt Screw M1.4 M1.6 M2 M2.5 M3 Grade12.9 Carbon Steel Allen Hexagonal Head Screws

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