Knife Thread Insert System of Measurement Metric Insert Diameter 15.0876 mm Overall Length 15.875 mm Internal Thread Size M8-1.25 Thread Direction Right Hand Thread Type Coarse Material Brass Material Grade/Class C3604 Finish Plain Drive Type Slotted Drill Bit Size 33/64 in Compatible Material Wood Minimum Material Thickness 31 3/4 mm Maximum Hole Diameter 13.1064 mm Manufacturer Location Globally Sourced Compatible with Grainger Part Number 4ZE55