Thumb Screw, Grip Style Knurled, Type Thumb Screw, Finish Plain, Material Stainless Steel, Thread Size 1/4 In.-28, Fastener Length 1 in, Thread Length Not Applicable, Head Width 0.313 in, Head Height 0.5 in, Tensile Strength 90,000 psi, Maximum Head Width 5/16 in, Minimum Head Width Not Applicable, Maximum Head Height 1/2 in, Minimum Head Height Not Applicable, System of Measurement Inch, Drive No Drive, Head Material Stainless Steel, Head Shape Round