5307-01-103-9773 (6823309)
NSN 5307-01-103-9773 (NIIN 01-103-9773) is a stepped stud in Federal Supply Class 5307, Studs — a headless fastener not exceeding 12 inches (304.8 mm) in length. Manufacturer part number 6823309 (Allison Transmission Inc, CAGE 73342).
Key specs: 26 to 32 rockwell c hardness; full characteristics table below. NIIN assigned November 1980; DEMIL A (none required).