Helical Insert, Helical Insert Type Screw-Locking, System of Measurement Inch, Overall Length 3/8 in, Thread Size 1/4 In.-28, Thread Direction Right Hand, Thread Type Fine, Material Stainless Steel, Material Grade/Class Nitronic 60, Finish Plain, Tang Style Tanged, Compatible Material Metal, Compatible Tap Size 1/4 In.-28, Drill Bit Size G, Maximum Hole Diameter Not Applicable, Tensile Strength 200,000 psi, Outside Diameter 0.316 in, Manufacturer Location Made in USA, Rockwell Hardness C43-C50