MIL-S-7493B (NOTICE 1), MILITARY SPECIFICATION: STEEL BARS, ALLOY, CARBURIZING, 4615, 4617, & 4620, AIRCRAFT, QUALITY (31 MAY 1984) [S/S BY SAE-AMS6290, SAE-AMS6292 AND SAE-AMS6294]

MIL-S-7493B (NOTICE 1), MILITARY SPECIFICATION: STEEL BARS, ALLOY, CARBURIZING, 4615, 4617, & 4620, AIRCRAFT, QUALITY (31 MAY 1984) [S/S BY SAE-AMS6290, SAE-AMS6292 AND SAE-AMS6294].