MS21087B, MILITARY STANDARD: NUT, SELF-LOCKING, PLATE, SIDE BY SIDE REDUCED RIVET SPACING, LOW HEIGHT, CRES, 125 KSI FTU, 450 DEG. AND 800 DEG. F (25 FEB 1992) [SUPERSEDED BY NASM21087]

MS21087B, MILITARY STANDARD: NUT, SELF-LOCKING, PLATE, SIDE BY SIDE REDUCED RIVET SPACING, LOW HEIGHT, CRES, 125 KSI FTU, 450 DEG. AND 800 DEG. F (25 FEB 1992) [SUPERSEDED BY NASM21087].