5305-00-812-4874 (HT6M9)
NSN 5305-00-812-4874 (NIIN 00-812-4874) is a close tolerance screw in Federal Supply Class 5305, Screws — a screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated. Manufacturer part number HT6M9; also referenced as NAS586-9 (National Aerospace Standards).
Key specs: 36 to 40 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1962; DEMIL A (none required); unit of issue EA (each), $14.47 gov standard price; ships at 0.0215 lb / 0.001 cu ft. Supersedes 5305-00-638-9736 (1961).