5305-00-018-1565 (181565)
NSN 5305-00-018-1565 (NIIN 00-018-1565) is a hexagon head cap screw in Federal Supply Class 5305, Screws — an externally threaded fastener designed for insertion into holes in assembled parts. Manufacturer part number 181565 (Army Weapons Command Attn, CAGE 21450); also referenced as FFS85TYPE2STYLE10PGRADE5 (Federal Specifications Promulgated).
Key specs: 23 to 32 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $0.03 gov standard price. Supersedes 5305-00-012-3440 (1983), 5305-00-012-3442 (1983).