Critical hardness
NSN 6240-01-095-8739
NSN 6320-01-458-1853
NSN 6110-00-395-7040
NSN 5925-01-550-5519
NSN 6145-00-674-1807
NSN 5965-01-411-4767
NSN 5910-01-529-4818
NSN 5975-01-401-5355
NSN 6645-01-184-0313
NSN 6685-01-090-8880
NSN 5935-01-314-6351
NSN 6150-01-351-3351
Last Updated: 12/26/2024