Helical Insert Helical Insert Type Screw-Locking System of Measurement Inch Overall Length 1/4 in Thread Size #8-32 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 #8-32 Drill Bit Size #17 Maximum Hole Diameter Not Applicable Tensile Strength 200 000 to 250 000 psi Outside Diameter 0.212 in Manufacturer Location Made in USA Rockwell Hardness C43-C50