Thumb Screw, Type Thumb Screw, Finish Zinc-Plated, Material Iron, Thread Size 3/8 In.-16, Fastener Length 1 in, Head Width 1.44 in, Head Height 0.79 in, Tensile Strength -, Head Type Wing, Maximum Head Width 1 7/16 in, Minimum Head Width Not Applicable, Maximum Head Height 51/64 in, Minimum Head Height Not Applicable, System of Measurement Inch, Head Material Iron/Zinc, Head Shape Wing