Rivet Nut System of Measurement Metric Insert Diameter 17.4 mm Overall Length 30.4 mm Installed Length 21.59 mm Thread Size M12-1.75 Thread Direction Right Hand Thread Type Coarse Flange Diameter 22 mm Flange Thickness 1.19 mm Material Steel Material Grade/Class 1010/1008 Finish Zinc Yellow Body Texture Knurled Compatible Material Metal Drill Bit Size 17.45 mm Maximum Hole Diameter 17.45 mm Minimum Material Thickness 1.6 mm Maximum Material Thickness 5.1 mm