Bolts
FSC 5306: Bolts
Federal Supply Class (FSC) 5306 covers bolts, the externally threaded fasteners that secure assemblies across military and aerospace platforms. The catalog includes active, obsolete, and last-time-buy bolts built to NAS, AN, MS, and MIL-SPEC specifications.
Bolts clamp parts together in structural and mechanical joints, holding assemblies under load and vibration. Selection depends on grade, thread, length, and the joint being secured.
Common types include hex head, socket head, eye, and structural bolts in many sizes. Materials include alloy steel, stainless steel, and titanium with finishes such as cadmium, zinc, and black oxide.
