Critical hardness
NSN 6685-01-646-3973
NSN 6130-01-406-4556
NSN 6220-01-133-4286
NSN 5835-01-216-7289
NSN 6135-00-299-6918
NSN 6220-00-494-7228
NSN 6145-01-279-0550
NSN 5915-00-110-6565
NSN 6320-01-458-1853
NSN 5910-00-432-1537
NSN 5895-01-464-4427
NSN 5998-01-244-7177
Last Updated: 02/16/2025