This is a special flex lock hex nut with a locking machined shoulder we supply to our aerospace customer on a 12 month blanket as-released purchase order basis. It is made in the USA in plain 303 stainless steel material and we supply it with full documentation, including signed C of C, DFAR material cert, and dimensional test report. Our internal part number for this item is 50FM-172.
Engineered Source Inc
Supplier and Distributor of Specialty Aerospace Hardware/Fasteners & Related Products
Santa Ana - Orange County - Los Angeles - Inland Empire - San Diego - Southern California - Cont. United States - Mexico