Finsert, Insert Type Finsert, System of Measurement Inch, Overall Length 3/8 in, Insert Diameter 21/64 in, Thread Size 1/4 In. -20, Thread Direction Right Hand, Thread Type Coarse, Material Brass, Material Grade/Class C3604, Finish Plain, Flange Style Al Ras, Body Texture Smooth, Number of Fins 2, Compatible Material Plastic, Wood, Drill Bit Size 21/64 in, Minimum Material Thickness 7/16 in, Maximum Hole Diameter 0.328 in, Manufacturer Location Made in USA, Flange Diameter 0.357 in. This item has been restricted from sale in the following state (s): []