Hex Drive Threaded Insert System of Measurement Inch Insert Diameter 29/64 in Overall Length 33/64 in Internal Thread Size 1/4 In.-20 Thread Direction Right Hand Thread Type Coarse Material Zinc Alloy Material Grade/Class Not Graded Finish Plain Drive Size M6 Drill Bit Size 23/64 in Compatible Material Wood Minimum Material Thickness 1 in Maximum Hole Diameter 0.359 in Flange Style Flush Manufacturer Location Globally Sourced Compatible with Grainger Part Number 4ZU86