'Helical Insert, Screw Locking, 304 Stainless Steel, Internal Thread Size 3/8-16, UNC Thread Type, Right Hand Thread Direction, Length 0.375", Free Coil Dia. 0.472", Tap Sizes 3/8-16, Drill Size 25/64", Tensile Strength (PSI) 200, 000, Rockwell Hardness C43-C50, Application For Metal, Package Quantity 10'