MS21447A, MILITARY STANDARD: BEARING, ROLLER, NEEDLE, TRACK ROLLER CROWN RADIUSED O.D. INTEGRAL STUD, TYPE VII ANTIFRICTION, INCH (05 DEC 1984) [SUPERSEDED BY SAE-AS21447]

MS21447A, MILITARY STANDARD: BEARING, ROLLER, NEEDLE, TRACK ROLLER CROWN RADIUSED O.D. INTEGRAL STUD, TYPE VII ANTIFRICTION, INCH (05 DEC 1984) [SUPERSEDED BY SAE-AS21447].