5307-00-298-4367 (SR1263P-006)
NSN 5307-00-298-4367 (NIIN 00-298-4367) 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 SR1263P-006 (Rolls-Royce Corporation, CAGE 63005); also referenced as ST1263P006 (General Motors Corp).
Key specs: 26 to 32 rockwell c hardness; full characteristics table below. NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each), $52.61 gov standard price; export Schedule B 7318.15.2000; ships at 0.01 lb / 0.0001 cu ft.