MIL-S-3289, MILITARY SPECIFICATION, STEEL, PLATE AND DISK, CARBON, FORGING QUALITY (23 APR 1965)

MIL-S-3289, MILITARY SPECIFICATION, STEEL, PLATE AND DISK, CARBON, FORGING QUALITY (23 APR 1965)., This specification covers one composition of forging quality carbon steel plate and disks, for steel cartridge cases for 20MM and larger ammunition.