Screws Buying Guide
High quality: It is made of high quality 12.9 grade alloy steel, and the surface is treated with black oxide. They have excellent corrosion
M3 x 6mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 100PCS
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5/16-18 Socket Cap Screws, Alloy Steel Socket Head Cap screws Black Ox
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