MS21299, MILITARY STANDARD: WASHER, COUNTERSUNK AND PLAIN, FOR USE WITH BOLTS AND NUTS UP TO AND INCLUDING 260 KSI FTU (28 JAN 1972) [SUPERSEDED BY NASM21299]

MS21299, MILITARY STANDARD: WASHER, COUNTERSUNK AND PLAIN, FOR USE WITH BOLTS AND NUTS UP TO AND INCLUDING 260 KSI FTU (28 JAN 1972) [SUPERSEDED BY NASM21299].