Rivet Nut System of Measurement Inch Insert Diameter 21/64 in Overall Length 11/16 in Thread Size 1/4 In.-20 Thread Type Coarse Flange Diameter 0.475 in Flange Thickness 0.06 in Material Aluminum Finish Plain Compatible Material Metal Drill Bit Size Q Maximum Hole Diameter 0.35 in Minimum Material Thickness 0.079 in Maximum Material Thickness 0.138 in Insert Nut Type Rivet Nut End Type Open Flange Style Flanged Package Quantity 40