The AASHTO M291 specification covers the chemical and mechanical requirements for carbon and alloy steel nuts used on bolts, studs, and externally threaded fasteners from ¼” through 4”. This standard is identical to ASTM A563.
The AASHTO M291 specification covers the chemical and mechanical requirements for carbon and alloy steel nuts used on bolts, studs, and externally threaded fasteners from ¼” through 4”. This standard is identical to ASTM A563.