Well Nut, System of Measurement Inch, Insert Diameter 1/2 in, Overall Length 53/64 in, Thread Size 1/4 In.-20, Thread Type Coarse, Flange Diameter 0.734375 in, Material Rubber, Finish Plain, Maximum Hole Diameter 0.5 in, Minimum Material Thickness 0.031 in, Maximum Material Thickness 0.187 in, Insert Nut Type Well Nut, Package Quantity 10