Thumb Screw, Grip Style Knurled, Type Thumb Screw, Finish Plain, Material Stainless Steel, Thread Size #4-48, Fastener Length 1/2 in, Thread Style Fully Threaded, Thread Length Not Applicable, Head Width 0.313 in, Head Height 0.188 in, Tensile Strength 90,000 psi, Head Type Cheese, Maximum Head Width 5/16 in, Minimum Head Width Not Applicable, Maximum Head Height 3/16 in, Minimum Head Height Not Applicable, System of Measurement Inch, Drive No Drive, Features Diamond Knurl