5340-00-058-4868 (2149-12)
NSN 5340-00-058-4868 (NIIN 00-058-4868) is a fusible plug in Federal Supply Class 5340, Hardware, Commercial — an externally threaded cylindrical item, usually containing a fusible core. Manufacturer part number 2149-12 (Bellofram Corporation, CAGE 01170); also referenced as 2383 (Bellofram Corporation).
Key specs: core, heat number; full characteristics table below. NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each), $8.63 gov standard price.