Heat-Set Insert Insert Type Heat-Set Insert System of Measurement Inch Insert Diameter 3/8 in Overall Length 19/64 in Thread Size 1/4 In.-20 Thread Direction Right Hand Thread Type Coarse Material Brass Shank Type Tapered Tapered End Diameter 0.349 in Flange Style Flush Number of Vanes 1 Compatible Material Thermoplastic Drill Bit Size 0.349 in Minimum Material Thickness 3/16 in Maximum Hole Diameter 0.363 in Features Pull-Out Resistance Finish Plain