Helical Insert Helical Insert Type Free-Running System of Measurement Metric Overall Length 8 mm Thread Size M4-0.70 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 M4-0.70 Drill Bit Size 4.20 mm Maximum Hole Diameter 3.2512 mm Tensile Strength 200 000 psi Outside Diameter 5.588 mm Manufacturer Location Globally Sourced Rockwell Hardness C43-C50