5305-00-044-4270 (444270)
NSN 5305-00-044-4270 (NIIN 00-044-4270) is a socket head cap screw in Federal Supply Class 5305, Screws — an externally threaded fastener whose threaded portion is of one nominal diameter. Manufacturer part number 444270 (General Motors LLC, CAGE 7X677); also referenced as FFS86TYPE1STYLE11 (Federal Specifications Promulgated).
Key specs: 36 to 43 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1960; DEMIL A (none required). Related NSN 5305-00-983-7455.