PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

666112Transformer,power

Northrop Grumman Systems Corporation · NSN 5950-00-645-8296 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-8296 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-8296. Primary manufacturer part number: 666112.
Features
  • Transformer,power — FSC 5950
  • Body Height: 0.844 INCHES NOMINAL IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
  • Terminal Type and Quantity: 6 TAB, SOLDER LUG
  • Body Length: 1.250 INCHES NOMINAL IN
  • Distance Between Mounting Facility Centers: 1.460 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-645-8296, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-645-8296
Primary Part Number666112
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusCANCELLED
Body Height0.844 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Terminal Type and Quantity6 TAB, SOLDER LUG
Body Length1.250 INCHES NOMINAL IN
Distance Between Mounting Facility Centers1.460 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Maximum Operating Temp105.0 CELSIUS DEGC
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Voltage4.45 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Inclosure TypeOPEN
Body Width1.000 INCHES NOMINAL IN
Mounting Facility Quantity2 SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Current75.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Mounting Hole Diameter0.187 INCHES NOMINAL SINGLE GROUP IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5945-00-259-0886 INTERCHANGEABLE
Relay,electromagnetic
5210-00-277-1613666-1 1/2 INTERCHANGEABLE
Gage Stock,thickness
L.s. Starrett Company (the) Div Tool Division
Cross-Reference Index
Part NumberManufacturer
A224C Gettysburg Engineering Co Inc (USA)
1876496REVFPC26 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
PEI 2179 Precision Electronics, Inc (USA)
1246 Gettysburg Engineering Co Inc (USA)
1876496REVFPC26 Northrop Grumman Systems Corporation (USA)
666112 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
666112 PRIMARY Northrop Grumman Systems Corporation (USA)
666112REVFPCALL Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
5945-00-259-0886INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5210-00-277-1613INTERCHANGEABLE
GAGE STOCK,THICKNESS
666-1 1/2

Frequently Asked Questions

What is NSN 5950-00-645-8296?

NSN 5950-00-645-8296 is a Transformer,power, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-645-8296?

NSN 5950-00-645-8296 has 8 cross-referenced part numbers: A224C (Gettysburg Engineering Co Inc), 1876496REVFPC26 (Lockheed Martin Corporation Div Rms - Mitchel Field), PEI 2179 (Precision Electronics, Inc), 1246 (Gettysburg Engineering Co Inc), 1876496REVFPC26 (Northrop Grumman Systems Corporation) and 3 more.

What NSN replaces 5950-00-645-8296?

There are 2 known substitutes for 5950-00-645-8296: 5945-00-259-0886, 5210-00-277-1613. Verify interchangeability with system specifications before substitution.

What are the specifications of 666112?

Key specifications for 666112: Body Height: 0.844 INCHES NOMINAL IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-645-8296 still in active supply?

NSN 5950-00-645-8296 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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