Photo 1 of M4 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS

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Photo 1 of M4 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCSPhoto 2 of M4 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS