Helical Insert Free Running 304 Stainless Steel Internal Thread Size 3/8-16 Thread Type UNC Thread Direction Right Hand Length 0.375 In Free Coil Dia 0.462 In Tap Sizes 3/8-16 STI Aluminum Drill Size X Tensile Strength 200 000 to 250 000 PSI Rockwell Hardness C43-C50 For Metal Package Quantity 100