MIL-T-5066B (NOTICE 3), MILITARY SPECIFICATION: TUBING, CARBON STEEL (1025), SEAMLESS AND WELDED (AIRCRAFT QUALITY) (25 NOV 1998) [S/S BY SAE-AMS-T-5066]., MIL-T-5066B remains inactive for new design; however, the document is valid for acquisitionwhen needed.