5306-01-009-7166 (FF-B-584)
NSN 5306-01-009-7166 (NIIN 01-009-7166) 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 FF-B-584 (Federal Specifications Promulgated, CAGE 81348); also referenced as MS35751-158 (National Aerospace Standards).
Key specs: 95 rockwell b maximum overall hardness; full characteristics table below. NIIN assigned September 1975; DEMIL A (none required); unit of issue EA (each), $19.73 gov standard price; ships at 0.3 lb / 0.0046 cu ft. Supersedes 5306-00-012-6838 (1986), 5306-00-282-0130 (2023), 5306-00-265-0820 (2022); related NSN 5306-00-190-3277.