6850-01-626-5657 (ULTRA-BLACK 407)
6850-01-626-5657 is equivalent to manufacture part number ULTRA-BLACK 407. It is a black oxide finish and is classified under Federal Supply Class 6850 (6850 - Chemical Specialties), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6850 - Chemical Specialties and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.