Thumb Screw, Grip Style Knurled, Type Thumb Screw, Finish Plain, Material Stainless Steel, Thread Size #4-40, Fastener Length 1 in, Thread Style Fully Threaded, Thread Length Not Applicable, Head Width 0.25 in, Head Height 0.5 in, Tensile Strength 90,000 psi, Maximum Head Width 1/4 in, Minimum Head Width Not Applicable, Maximum Head Height 1/2 in, Minimum Head Height Not Applicable, System of Measurement Inch, Drive No Drive, For Use in Systems Jig and Fixture Component