Heli-Coil R11916 3/8-24 Inserts/Pk 12 Price For: Each Meets/Exceeds: - Thread Type: UNF Rockwell Hardness: C43-C50 Item: Helical Insert Thread Direction: Right Hand Application: For Metal Type: Free Running Helical Tensile Strength (PSI): 200, 000 to 250, 000 Free Coil Dia.: 0.458" Tap Sizes: 3/8-24 STI Internal Thread Size: 3/8-24 Drill Size: 25/64" Material: 304 Stainless Steel Length: 0.562" Country of Origin (subject to change): United States