Knife Thread Insert System of Measurement Inch Insert Diameter 21/64 in Overall Length 3/8 in Internal Thread Size #8-32 Thread Direction Right Hand Thread Type Coarse Material Brass Material Grade/Class C3604 Finish Plain Drive Type Slotted Drill Bit Size 17/64 in Compatible Material Wood Minimum Material Thickness 3/4 in Maximum Hole Diameter 0.266 in Manufacturer Location Globally Sourced Compatible with Grainger Part Number 4ZE52