25, Fastener Length 40 mm, Head Width 39 mm, Head Height 20 mm, Head Type Wing, System of Measurement Metric, Dimensional Standards DIN 316, Head Shape Rounded Wing.Thumb Screw, Finish Zinc Plated, Material Iron, Thread Size M8-1.
Shoulder Screw, Shoulder Screw Type Precision Shoulder Screw, Head Type Standard, Drive Type Socket, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, System of Measurement Inch, Thread Size 1/4 In.-20, Minimum Thread Length 7/16 in, Shoulder Length 5/16 in, Shoulder Length Tolerance +/-0.