Fastener Design Manual - NASA

passivated per MIL-S-5002 Passivated per QQ-P-35 or cadmium plated None None None Useful design temperature limit, ‘F ... Phosphate Coatings ... and the procedure for applying it by AMS2506. The coating is sprayed or dipped on the part and

  Procedures, Fastener, Coating, Phosphate, Per mil