ASTM A194

Carbon and alloy steel nuts for bolts for high pressure and high temperature service.

ASTM A563

Standard specification for carbon and alloy steel nuts.

ASTM F594

Stainless steel nuts.

AASHTO M292

The AASHTO M292 specification covers the chemical and mechanical requirements for carbon, alloy and stainless steel nuts intended for use in high-pressure and/or high-temperature service from ¼” through 4”.  This standard is identical to ASTM A194.

SAE J995

Mechanical and material requirements for steel nuts.