Critical hardness
NSN 5999-01-081-3210
NSN 5905-01-463-6512
NSN 4140-00-555-3856
NSN 6320-00-456-0836
NSN 5950-00-944-3608
NSN 5915-01-343-9822
NSN 6650-01-421-4024
NSN 5975-01-373-8361
NSN 5935-01-264-8771
NSN 5925-01-076-4458
NSN 6610-01-016-9999
NSN 6685-01-537-0782
Last Updated: 02/22/2025