Helical Insert, Free Running Helical, 304 Stainless Steel, Internal Thread Size 8-32, Thread Type UNC, Thread Direction Right Hand, Length 0.246 in, Free Coil Dia. 0.212 in, Tap Sizes 8-32 STI, Drill Size #17, Tensile Strength (PSI) 200, 000 to 250, 000, Rockwell Hardness C43-C50, For Metal, Meets/Exceeds -, Package Quantity 12