Self Locking Thread Insert Compatible Material Metal Compatible Tap Size 5/16 In.-18 Drill Bit Size I External Thread Fit 2A External Thread Size 5/16 In.-18 Finish Black Phosphate Insert Diameter 5/16 in Internal Thread Fit 2B Internal Thread Size M5-0.80 Material Steel Material Grade/Class 12L14 Maximum Hole Diameter 0.272 in Minimum Installation Depth 3/8 in Overall Length 8 mm System of Measurement Inch/Metric Thread Direction Right Hand Thread Type Coarse