Heat treat: (for 1085 or 1095 steel) heat at 1450 to 1500 degrees f; (for 1650 steel) heat at 1550 to 1600 degrees f; oil quench; temper 1 hour; locking feature included in head; rockwell min 73.0 to rockwell max 76.0 hardness.
NSN 6240-01-023-7720
NSN 5999-00-556-6313
NSN 5905-00-145-4941
NSN 6650-01-496-2662
NSN 6110-00-835-8919
NSN 6130-00-796-4096
NSN 5935-01-204-0336
NSN 5920-01-302-6417
NSN 5999-00-872-4394
NSN 6620-01-610-5081
NSN 6650-00-105-2754
NSN 5999-01-519-8378