5306-01-038-5259 (1001016)
NSN 5306-01-038-5259 (NIIN 01-038-5259) 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 1001016 (Frink America Inc, CAGE 80908).
NIIN assigned April 1977; DEMIL A (none required); unit of issue EA (each), $3.72 gov standard price.