5305-00-054-5472 (FFS103)
NSN 5305-00-054-5472 (NIIN 00-054-5472) is a setscrew in Federal Supply Class 5305, Screws — an externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone. Manufacturer part number FFS103 (Federal Specifications Promulgated, CAGE 81348); also referenced as H2311PC41 (Siemens Energy, Inc.).
Key specs: case-hardened; 30 to 37 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each), $1.44 gov standard price; ships at 0.017 lb / 0.0007 cu ft.