Rivet Nut System of Measurement Inch Insert Diameter 25/64 in Overall Length 0.71 mm Installed Length 3/8 in Thread Size 1/4 In.-20 Thread Direction Right Hand Thread Type Coarse Flange Diameter 0.5 in Flange Thickness 0.03 in Material Aluminum Material Grade/Class 5056 Finish Plain Body Texture Knurled Compatible Material Metal Drill Bit Size 25/64 in Maximum Hole Diameter 0.3906 in Minimum Material Thickness 0.165 in Maximum Material Thickness 0.26 in