Press Insert, Insert Type Knurled Press Insert, System of Measurement Inch, Overall Length 1/2 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, Plain, Flange Style Flanged, Body Texture Knurled, Number of Fins Not Applicable, Compatible Material Plastic, Drill Bit Size 5/16 in, Minimum Material Thickness 7/16 in, Maximum Hole Diameter 0.313 in, Manufacturer Location Globally Sourced.