Helical Insert Helical Insert Type Free-Running System of Measurement Inch Overall Length 17/64 in Thread Size 1/8 In.-27 Thread Direction Right Hand Thread Type NPT Material Stainless Steel Material Grade/Class 18-8 Finish Plain Tang Style Tanged Compatible Material Metal Compatible Tap Size 1/8 In.-27 Drill Bit Size W Maximum Hole Diameter 0.461 in Tensile Strength 200 000 psi Outside Diameter 0.511 in Manufacturer Location Globally Sourced Rockwell Hardness C43-C50