ASME SEC II A SA-194/SA-194M-2001 Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both ASTM A194/A194M-99
AASHTO - American Association of State Highway and Transportation Officials, astm nut
M 291-2005 Standard Specification for Carbon and Alloy Steel Nuts (ASTM Designation A 563-04)
M 292/M 292M-1992 Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High-Temperature Service (ASTM A194/A194M-91)
M 291M-2003 Standard Specification for Carbon and Alloy Steel Nuts (Metric) (ASTM Designation A 563M-01)
M 291M-2005 Standard Specification for Carbon and Alloy Steel Nuts (Metric) (ASTM Designation A 563M-03)
M 291M-2006 Standard Specification for Carbon and Alloy Steel Nuts (Metric) (ASTM Designation A 563M-04)