Helical Insert Helical Insert Type Free-Running System of Measurement Metric Overall Length 20 mm Thread Size M20-2.50 Thread Direction Right Hand Thread Type Coarse Material Stainless Steel Material Grade/Class 18-8 Finish Plain Tang Style Tanged Compatible Material Metal Compatible Tap Size M20-2.50 Drill Bit Size 0.819 in Maximum Hole Diameter 17.2974 mm Tensile Strength 200 000 psi Outside Diameter 24.4094 mm Manufacturer Location Globally Sourced Rockwell Hardness C43-C50