MIL-S-980B, MILITARY SPECIFICATION: STEEL, CHROMIUM ALLOY, BARS (FOR TORPEDO GYROSCOPE BEARINGS) (02 JUL 1965)

MIL-S-980B, MILITARY SPECIFICATION: STEEL, CHROMIUM ALLOY, BARS (FOR TORPEDO GYROSCOPE BEARINGS) (02 JUL 1965)., This specification covers spheroidized chromium alloy steel bars of special metallurgical quality in sizes 1 inch and under in diameter, for use in torpedo gyroscope bearings requiring a finish of minimum surface roughness.