PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WE1866Transformer,power

Wems Electronics Transformer Group · NSN 5950-00-007-6005 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-007-6005 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-007-6005. Primary manufacturer part number: WE1866.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 20.0 KILOHERTZ NOMINAL SINGLE COMPONENT
  • Winding Operating Voltage: 98.98 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
  • Winding Operating Voltage: 98.98 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY
  • Reliability Indicator: NOT ESTABLISHED
  • Inclosure Type: FULLY INCLOSED
  • Winding Operating Current: 0.7 AMPERES DC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.300 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 5950-00-007-6005, 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 Wems Electronics Transformer Group. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-007-6005
Primary Part NumberWE1866
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerWems Electronics Transformer Group
StatusACTIVE
Frequency Rating20.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage98.98 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
Winding Operating Voltage98.98 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeFULLY INCLOSED
Winding Operating Current0.7 AMPERES DC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.300 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.300 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Terminal Type and Quantity20 TURRET
Winding Operating Current0.5 AMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Maximum Operating Temp110.0 CELSIUS DEGC
Winding Operating Voltage4.45 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Function and Quantity2 PRIMARY AND 8 SECONDARY SINGLE COMPONENT
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current0.7 AMPERES DC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Current0.5 AMPERES DC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Winding Operating Voltage9.26 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage4.45 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Width1.600 INCHES MAXIMUM IN
Winding Operating Voltage9.26 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Body Length1.600 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5960-00-134-6031 INTERCHANGEABLE
Electron Tube
6240-00-143-3159 INTERCHANGEABLE
Lamp,incandescent
3110-00-156-51071312J INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
5110-00-204-0726 INTERCHANGEABLE
File,hand
5960-00-262-1357 INTERCHANGEABLE
Electron Tube
6930-00-286-20481425-2 INTERCHANGEABLE
Indicator,fuel Quantity,simulate
Malwin Electronics Corp.
5310-00-807-6879 INTERCHANGEABLE
Washer,lock
5320-00-901-0307NAS1425-02 INTERCHANGEABLE
Pin-Rivet
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5905-01-115-0085 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
1260-01-140-25751425-2 INTERCHANGEABLE
Ball,transfer
The Boeing Company
Cross-Reference Index
Part NumberManufacturer
WE1866 Wems Electronics Transformer Group (USA)
WE1866 Magnetika Inc (USA)
14252 Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems (USA)
865073-0070 Litton Systems Inc. Div Navigation Systems Division (USA)
16729 Robert M. Hadley Company, Inc. (USA)
Related Parts
5960-00-134-6031INTERCHANGEABLE
ELECTRON TUBE
6240-00-143-3159INTERCHANGEABLE
LAMP,INCANDESCENT
3110-00-156-5107INTERCHANGEABLE
BEARING,BALL,ANNULAR
1312J
5110-00-204-0726INTERCHANGEABLE
FILE,HAND
5960-00-262-1357INTERCHANGEABLE
ELECTRON TUBE
6930-00-286-2048INTERCHANGEABLE
INDICATOR,FUEL QUANTITY,SIMULATE
1425-2
5310-00-807-6879INTERCHANGEABLE
WASHER,LOCK
5320-00-901-0307INTERCHANGEABLE
PIN-RIVET
NAS1425-02
5905-01-115-0085INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
1260-01-140-2575INTERCHANGEABLE
BALL,TRANSFER
1425-2
6515-01-377-1440INTERCHANGEABLE
IMPLANT,ORBITAL,SPHERE
14252

Frequently Asked Questions

What is NSN 5950-00-007-6005?

NSN 5950-00-007-6005 is a Transformer,power, manufactured by Wems Electronics Transformer Group, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-007-6005?

NSN 5950-00-007-6005 has 5 cross-referenced part numbers: WE1866 (Wems Electronics Transformer Group), WE1866 (Magnetika Inc), 14252 (Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems), 865073-0070 (Litton Systems Inc. Div Navigation Systems Division), 16729 (Robert M. Hadley Company, Inc.).

What NSN replaces 5950-00-007-6005?

There are 11 known substitutes for 5950-00-007-6005: 5960-00-134-6031, 6240-00-143-3159, 3110-00-156-5107 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of WE1866?

Key specifications for WE1866: Frequency Rating: 20.0 KILOHERTZ NOMINAL SINGLE COMPONENT; Winding Operating Voltage: 98.98 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY; Winding Operating Voltage: 98.98 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY; Reliability Indicator: NOT ESTABLISHED. 27 total characteristics are documented in the Federal Logistics Information System.

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