5305-00-018-6312 (FFS85TYPE2STYLE10PGRADE5)
NSN 5305-00-018-6312 (NIIN 00-018-6312) 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 FFS85TYPE2STYLE10PGRADE5 (Federal Specifications Promulgated, CAGE 81348); also referenced as NASM90726 (National Aerospace Standards); MS35296-74 (Military Standards).
Key specs: 23 to 30 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Related NSN 5305-00-269-3250.