Hex Drive Threaded Insert System of Measurement Inch Insert Diameter 9/16 in Overall Length 51/64 in Internal Thread Size 5/16 In.-18 Thread Direction Right Hand Thread Type Coarse Material Zinc Alloy Material Grade/Class Not Graded Finish Plain Drive Size M8 Drill Bit Size 7/16 in Compatible Material Wood Minimum Material Thickness 1 1/4 in Maximum Hole Diameter 0.438 in Flange Style Flush Manufacturer Location Globally Sourced Compatible with Grainger Part Number 4ZY12