Below are all the NSN's that work. And all the Part Numbers that work. This contactor fits not only the MEP-004A, but the MEP-005A, MEP-006A and the MEP-007A. The MFR code is who supplied it to the Gov. Start at the top, and plug in the NSN's and part numbers one by one, in epay or what ever you use to find parts. The MFR code is easy to break, type in MFR Code 50603 in your seurch engine, and the answer will pop out. Good luck.
NSN: 5945-00-007-1147
NSN: 5945-01-010-5911
NSN: 5945-01-010-5912
NSN: 5945-01-021-2898
Part number: HB200A MFR Code: 50603
Part number: HB200A MFR Code: 7E656
Part number: HB200A MFR Code: 24975
Part number: A3349918 MFR Code: 80063
Part number: A3349918-1 MFR Code: 80063
Part number: A3349918-2 MFR Code: 80063
Part number: B301EA MFR Code: 74063
Part number: SD105C MFR Code: 74063
Part number: SA105C MFR Code: 74063
Part number: JCG 6001A MFR Code: 24975
Part number: JCG-6001A MFR Code: 1R7H6
Part number: HB200A1C4H MFR Code: KO577