M4 x 8mm 4 x 8 Black Inner Hex Flat Socket Screw x 10
Black Inner Hex Flat Screws - measurement format: diameter thread x long thread (note: measurements repeated twice in title) - Hardness rating - 12.9 - Space to fit 3mm allen key in screw head. Note: Picture used for illustration screw may arrive longer or shorter than that shown.
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