M6(M5-0.80) x 20 MM Socket Shoulder Screw, CL12.9, Black Oxide

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The M6(M5-0.80) x 20 MM Socket Shoulder Screws are manufactured from alloy steel, class 12.9 strength. Our metric socket shoulder screws are distinguished by an unthreaded section called the shoulder located just below the head. These fasteners are installed using a hexagon drive tool, which makes them useful in tight spaces where standard tools may not fit. The shoulder section provides a smooth, precise surface for components to rotate or align around. Black oxide is standard and readily available, offering a minimally protective layer.