3120-00-555-6412 (2210370P3-008)
NSN 3120-00-555-6412 (NIIN 00-555-6412) is a sleeve bushing in Federal Supply Class 3120, Bearings, Plain, Unmounted — a tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole. Manufacturer part number 2210370P3-008 (The Boeing Company, CAGE 18355); also referenced as 2000-7 (Avalon Glass And Mirror Co).
Key specs: 26 rockwell c nominal overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8482.99.7060.