Screws
FSC 5305: Screws
Federal Supply Class (FSC) 5305 covers screws, the externally threaded fasteners that secure assemblies across military and aerospace platforms. The catalog includes active, obsolete, and last-time-buy screws built to NAS, AN, MS, and MIL-SPEC specifications.
Screws fasten parts that may need to be removed for service, holding panels, brackets, and components together. Selection depends on head style, drive type, thread, and the material being joined.
Common types include machine screws, cap screws, self-tapping screws, set screws, and wood screws in many head and drive styles. Materials include alloy steel, stainless steel, and brass with finishes such as zinc, cadmium, and black oxide.