MS21250
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- MS21250L, MILITARY STANDARD, BOLT, TENSION, STEEL, EXTERNAL WRENCHING, FLANGED, 12-POINT, 180 KSI FTU, 450 DEG F (30 JAN 1989) [S/S BY NASM21250]
- MIL-B-8831B, MILITARY SPECIFICATION, BOLT, 180 KSI FTU AND 180 KSI FSU, 450 DEGREES F PROTRUDING AND FLUSH HEAD, GENERAL SPECIFICATION FOR (23 AUG 1982) [S/S BY NASM8831]
