NSN 7H-6120-016945070, TDP VER 007, REF NR V1-4188C, QTY 75 EA, DELIVERY FOB ORIGIN. The approved source of supply is Arnold Magnetics Corporation and CAGE code 04879. The Government does not own the ... NSN 7H-6120-016945070, TDP VER 007, REF NR V1-4188C, QTY 75 EA, DELIVERY FOB ORIGIN. The approved source of supply is Arnold Magnetics Corporation and CAGE code 04879. The Government does not own the data or the rights to the data needed to purchase / contract repair of this part from additional sources. It has been determined to be uneconomical to buy the data or rights to the data. It is uneconomical to reverse engineer the part.