Hex Head Gripper Screw Steel 40 mm L

Hex Head Gripper Screw w/Serrated Pad System of Measurement Metric Thread Size M20 Hex Width 30 mm Screw Material Steel Gripper Material Carbide Hardness Rockwell C72 to 74 Head Height 13.7 mm Pad Top Diameter 25.4 mm Serration Type Extra Fine Thread Length 40 mm Length Under Head 40 mm Strength Grade/Class Class 10.9 Finish Black Oxide Standards RoHS