AIA NASM25027

The nuts conforming to this specification are intended for use in
applications where the temperature is not greater than the following
values:

     Copper-base alloy nuts - 250 degrees F
     Aluminum-alloy nuts - 250 degrees F
     Corrosion-resistant steel - 250 degrees F, 450 degrees F, or 800
       degrees F
     Noncorrosion-resistant steel - 250 degrees F or 450 degrees F
     Nickel-copper alloy nuts - 250 degrees F

NOTE:  Temperature limits below those listed may occur due to coatings,
lubricants and/or non-metallic locking elements.  Certain limitations in
reusability (less than 15 cycles) occur for certain material and
lubricant combinations.

This specification covers self-locking nuts for use in temperatures of 250 degrees F, 450 degrees F, and 800 degrees F (see 6.1).