5305-00-448-8113 (HT5UA11)
NSN 5305-00-448-8113 (NIIN 00-448-8113) 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 HT5UA11 (Fairchild Fasteners Europe - Vsd, CAGE C4293).
Key specs: 40 to 43 rockwell c overall hardness; full characteristics table below. NIIN assigned May 1970; DEMIL A (none required); unit of issue EA (each), $18.85 gov standard price.