Part # 7-311112200-7 (NSN 1560-01-466-9666)
A3145760 is I think the Part I.D. number
DWG F is Drawing I.D.
PLN 19 is Plan #19
MFR 8V613 is Boeing's FSC
11-2-99 Date of manufacture
Its my understanding that every part installed on any aircraft is logged into a data base, or listing of some type. That way, should Boeing have a problem with a part, it can tell the Military what part, part number, build number, date of manufacture and the part I.D. number. Then the Military can find out where it is, and ground the aircraft, (if necessary) so the part can be replaced/checked/inspected. It also helps I.D. a wreck. If you can find a part with the I.D. number, you can trace it back to a specific aircraft. I went to WOC school with a guy who had the strange hobby of finding wrecked aircraft and find out its history. One night he explained ALL about it to me.