PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

604303Transformer,power

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5950-00-646-3425 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-3425 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-3425. Primary manufacturer part number: 604303.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Voltage: 27.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Current: 600.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Body Width: 1.641 INCHES MAXIMUM IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-646-3425, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 27 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-646-3425
Primary Part Number604303
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage27.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current600.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Body Width1.641 INCHES MAXIMUM IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage544.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Nominal Thread Size0.086 INCHES SINGLE GROUP IN
Winding Operating Current5.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage5.50 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Function and Quantity1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Inclosure TypeOPEN
Mounting Facility Quantity4 SINGLE GROUP
Maximum Operating Temp105.0 CELSIUS DEGC
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity16 WIRE LEAD
Winding Operating Current27.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage26.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Length2.266 INCHES MAXIMUM IN
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Thread Quantity Per Inch56 SINGLE GROUP
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Current47.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Body Height1.797 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-007-7911SMA586373 INTERCHANGEABLE
Magnet,permanent
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6550-00-165-65382592 INTERCHANGEABLE
Test Kit,occult Blood Determinat
Siemens Healthcare Diagnostics Inc. Dba Siemens Healthcare Diagnostics Inc Div Siemens Healthcare Diagnostics
6810-00-264-89541-0126 INTERCHANGEABLE
Formic Acid,88 Percent
Avantor Performance Materials, Inc.
5325-00-276-6099 INTERCHANGEABLE
Grommet,nonmetallic
7310-00-316-2299DFG-100 DOUBLE INTERCHANGEABLE
Oven,baking and Roasting,deck
G.s. Blodgett, Llc Div Blodgett
5950-00-444-3629676862-1 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
5815-00-976-10856002-660 INTERCHANGEABLE
Arm
Raytheon Company Div Rmd Strategic
6730-01-145-9419 INTERCHANGEABLE
Projector,motion Picture,silent
2990-01-154-132314044996 INTERCHANGEABLE
Pipe,exhaust
General Motors Llc Dba General Motors Llc
3110-01-179-2143 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
604303 Honeywell International Inc. Dba Honeywell International (USA)
604303 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
C15529 Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
43941 Coast/advanced Chip Magnetics, Inc. (USA)
2592 Precision Electronics, Inc (USA)
Related Parts
5999-00-007-7911INTERCHANGEABLE
MAGNET,PERMANENT
SMA586373
6550-00-165-6538INTERCHANGEABLE
TEST KIT,OCCULT BLOOD DETERMINAT
2592
6810-00-264-8954INTERCHANGEABLE
FORMIC ACID,88 PERCENT
1-0126
5325-00-276-6099INTERCHANGEABLE
GROMMET,NONMETALLIC
7310-00-316-2299INTERCHANGEABLE
OVEN,BAKING AND ROASTING,DECK
DFG-100 DOUBLE
5950-00-444-3629INTERCHANGEABLE
TRANSFORMER,POWER
676862-1
5815-00-976-1085INTERCHANGEABLE
ARM
6002-660
6730-01-145-9419INTERCHANGEABLE
PROJECTOR,MOTION PICTURE,SILENT
2990-01-154-1323INTERCHANGEABLE
PIPE,EXHAUST
14044996
3110-01-179-2143INTERCHANGEABLE
BEARING,BALL,ANNULAR
2590-01-273-3225INTERCHANGEABLE
CAP,FILLER OPENING
1014Z1976
2815-01-314-5710INTERCHANGEABLE
RING SET,PISTON

Frequently Asked Questions

What is NSN 5950-00-646-3425?

NSN 5950-00-646-3425 is a Transformer,power, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-646-3425?

NSN 5950-00-646-3425 has 5 cross-referenced part numbers: 604303 (Honeywell International Inc. Dba Honeywell International), 604303 (Lockheed Martin Corporation Div Rms - Mitchel Field), C15529 (Electronic Transformer Corp Div Electronic Transformer Corporation), 43941 (Coast/advanced Chip Magnetics, Inc.), 2592 (Precision Electronics, Inc).

What NSN replaces 5950-00-646-3425?

There are 12 known substitutes for 5950-00-646-3425: 5999-00-007-7911, 6550-00-165-6538, 6810-00-264-8954 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 604303?

Key specifications for 604303: Overall Length: 2.266 INCHES MAXIMUM IN; Reliability Indicator: NOT ESTABLISHED; Winding Operating Voltage: 27.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 30 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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