930 Pcs M3 Bolts and Nuts Set with Washers, Hex Socket Head Cap Screws Bolt Set & Hex Socket Button Head Cap Screw, Small Pan Head Machine Screws Bolts, 12.9 Grade/10.9 Grade Carbon Steel, Black. 【Hex Socket Head Cap Screws Bolts】The hexagon socket screws have a high cylindrical head and a recessed hexagonal drive area, which has high holding force under high torque, is not easy to deform or slide, and has a more balanced force.
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