Rivet Nut System of Measurement Inch Insert Diameter 25/64 in Overall Length 37/64 in Thread Size 1/4 In.-20 Thread Type Coarse Flange Diameter 0.5 in Flange Thickness 0.04 in Material Aluminum Finish Plain Body Texture Knurled Compatible Material Metal Drill Bit Size 25/64 in Maximum Hole Diameter 0.39 in Minimum Material Thickness 0.027 in Maximum Material Thickness 0.165 in Insert Nut Type Rivet Nut End Type Open Flange Style Flanged Package Quantity 50