Self Locking Thread Insert Compatible Material Metal Compatible Tap Size 7/16 In.-14 Drill Bit Size U External Thread Fit 2A External Thread Size 7/16 In.-14 Finish Black Phosphate Insert Diameter 7/16 in Internal Thread Fit 2B Internal Thread Size 1/4 In.-20 Material Steel Material Grade/Class 12L14 Maximum Hole Diameter 0.368 in Minimum Installation Depth 1/2 in Overall Length 7/16 in System of Measurement Inch Thread Direction Right Hand Thread Type Coarse