5306-00-067-8511 (FFB584)
NSN 5306-00-067-8511 (NIIN 00-067-8511) is a square neck bolt in Federal Supply Class 5306, Bolts — a headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head. Manufacturer part number FFB584 (Federal Specifications Promulgated, CAGE 81348); also referenced as MS35751-83 (National Aerospace Standards).
Key specs: 95 rockwell b maximum overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $1.12 gov standard price; ships at 0.14 lb / 0.0021 cu ft. Supersedes 5306-00-054-8043 (1979), 5306-00-059-1289 (2025), 5306-00-012-6734 (1982) and 2 more.