PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

139C581H01Transformer,power

Northrop Grumman Support Services Corp · NSN 5950-00-594-0312 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-594-0312 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-594-0312. Primary manufacturer part number: 139C581H01.
Features
  • Transformer,power — FSC 5950
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.440 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inclosure Type: FULLY INCLOSED
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Winding Operating Voltage: 360.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Nominal Thread Size: 0.164 INCHES SINGLE 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 5950-00-594-0312, 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 Support Services Corp. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-594-0312
Primary Part Number139C581H01
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.440 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeFULLY INCLOSED
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Operating Voltage360.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Transformer Winding Connection TypeDELTA-WYE
Winding Operating Voltage208.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Terminal Type and Quantity6 TAB, SOLDER LUG
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Body Width2.000 INCHES MAXIMUM IN
Body Length3.060 INCHES MAXIMUM IN
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Body Height2.810 INCHES MAXIMUM IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Current0.155 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-144-87891B4114 INTERCHANGEABLE
Bearing,ball,annular
Caterpillar Inc Div Caterpillar Defense
4730-00-488-617043303 INTERCHANGEABLE
Clamp-Stainless Ste
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
2990-00-845-75872227906 INTERCHANGEABLE
Pipe,exhaust
Chrysler Realty Company Llc Dba Daimler Chrysler
6680-01-147-260343303 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5950-01-310-9369 INTERCHANGEABLE
Transformer,power
3230-01-344-940943303 INTERCHANGEABLE
Bit,router
Porter Cable/delta
5310-01-373-147343303 INTERCHANGEABLE
Nut,self-Locking,hexagon
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5950-01-461-448643303 INTERCHANGEABLE
Transformer,power
Pico Electronics Inc
Cross-Reference Index
Part NumberManufacturer
139C581H01 Magnatronix Corporation (USA)
43303 Freed Transformer Co (USA)
139C581H01 PRIMARY Northrop Grumman Support Services Corp (USA)
139C581H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
3110-00-144-8789INTERCHANGEABLE
BEARING,BALL,ANNULAR
1B4114
4730-00-488-6170INTERCHANGEABLE
CLAMP-STAINLESS STE
43303
2990-00-845-7587INTERCHANGEABLE
PIPE,EXHAUST
2227906
6680-01-147-2603INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
43303
5950-01-310-9369INTERCHANGEABLE
TRANSFORMER,POWER
3230-01-344-9409INTERCHANGEABLE
BIT,ROUTER
43303
5310-01-373-1473INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
43303
5950-01-461-4486INTERCHANGEABLE
TRANSFORMER,POWER
43303

Frequently Asked Questions

What is NSN 5950-00-594-0312?

NSN 5950-00-594-0312 is a Transformer,power, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-594-0312?

NSN 5950-00-594-0312 has 4 cross-referenced part numbers: 139C581H01 (Magnatronix Corporation), 43303 (Freed Transformer Co), 139C581H01 (Northrop Grumman Support Services Corp), 139C581H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).

What NSN replaces 5950-00-594-0312?

There are 8 known substitutes for 5950-00-594-0312: 3110-00-144-8789, 4730-00-488-6170, 2990-00-845-7587 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 139C581H01?

Key specifications for 139C581H01: Mounting Facility Quantity: 4 SINGLE GROUP; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.440 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Inclosure Type: FULLY INCLOSED; Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT. 20 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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