Key Locking Thread Insert System of Measurement Metric Insert Diameter 12 mm Overall Length 12 mm Internal Thread Size M8-1.00 Internal Thread Fit 6H External Thread Size M12-1.25 External Thread Fit 6G Thread Direction Right Hand Thread Type Fine Material Steel Finish Black Phosphate Wall Type Thin Wall Number of Locking Keys 4 Compatible Material Metal Compatible Tap Size M12-1.25 Drill Bit Size 10.80 mm Minimum Installation Depth 13 31/64 mm Maximum Hole Diameter 274.32 mm