MS21447A (NOTICE 1), MILITARY SPECIFICATION SHEET: BEARING, ROLLER, NEEDLE, TRACK ROLLER CROWN RADIUSED O.D. INTEGRAL STUD, TYPE VII ANTIFRICTION, INCH (05 APR 1999) [SUPERSEDED BY SAE-AS21447]

MS21447A (NOTICE 1), MILITARY SPECIFICATION SHEET: BEARING, ROLLER, NEEDLE, TRACK ROLLER CROWN RADIUSED O.D. INTEGRAL STUD, TYPE VII ANTIFRICTION, INCH (05 APR 1999) [SUPERSEDED BY SAE-AS21447].