PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25701Reactor

Freed Transformer Co · NSN 5950-00-510-1772 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-510-1772 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-510-1772. Primary manufacturer part number: 25701.
Features
  • Reactor — FSC 5950
  • Winding Quantity: 1 SINGLE COMPONENT
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Body Width: 2.062 INCHES MAXIMUM IN
  • Inclosure Type: HERMETICALLY SEALED
  • Inductance Rating: 2.50 HENRY MINIMUM AND 12.50 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • DC Resistance Rating in Ohms: 137.000 SINGLE COMPONENT SINGLE WINDING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-510-1772, 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 Freed Transformer Co. 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-510-1772
Primary Part Number25701
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Winding Quantity1 SINGLE COMPONENT
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Body Width2.062 INCHES MAXIMUM IN
Inclosure TypeHERMETICALLY SEALED
Inductance Rating2.50 HENRY MINIMUM AND 12.50 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms137.000 SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Width1.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Facility Quantity4 SINGLE GROUP
Maximum Operating Temp125.0 CELSIUS DEGC
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Body Height3.125 INCHES MAXIMUM IN
Winding Operating Current20.0 MILLIAMPERES DC MINIMUM AND 200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Inductance TypeSWINGING
Terminal Type and Quantity2 STANDOFF, SOLDER LUG
Body Length2.312 INCHES MAXIMUM IN
Reliability IndicatorNOT ESTABLISHED
Thread Quantity Per Inch32 SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.688 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5977-00-038-1477 INTERCHANGEABLE
Brush,electrical Contact
4730-00-104-739327910-2 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
Collins Engine Nozzles, Inc
3040-00-149-251599121609 INTERCHANGEABLE
Shaft,shouldered
Alfa Laval Inc
5950-00-163-9319 INTERCHANGEABLE
Reactor
5315-00-422-0604 INTERCHANGEABLE
Pin,grooved,headless
4520-00-478-5858 INTERCHANGEABLE
Heating Element,electrical,immer
5962-00-481-864225701-I-C INTERCHANGEABLE
Microcircuit,linear
Emcore Corporation Div Concord Division
5950-00-581-217621-609 INTERCHANGEABLE
Coil,radio Frequency
Neurotech Corp Control Electronics Div
5935-00-626-8620970653-1 INTERCHANGEABLE
Retainer,electrical Connector
Raytheon Company Dba Raytheon
5330-00-641-2010 INTERCHANGEABLE
Packing,preformed
Cross-Reference Index
Part NumberManufacturer
21609 Emerson Electric Co White-Rodgers Div (USA)
SMC283220 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
25701 PRIMARY Freed Transformer Co (USA)
678-0755-00 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
5977-00-038-1477INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
4730-00-104-7393INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
27910-2
3040-00-149-2515INTERCHANGEABLE
SHAFT,SHOULDERED
99121609
5950-00-163-9319INTERCHANGEABLE
REACTOR
5315-00-422-0604INTERCHANGEABLE
PIN,GROOVED,HEADLESS
4520-00-478-5858INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,IMMER
5962-00-481-8642INTERCHANGEABLE
MICROCIRCUIT,LINEAR
25701-I-C
5950-00-581-2176INTERCHANGEABLE
COIL,RADIO FREQUENCY
21-609
5935-00-626-8620INTERCHANGEABLE
RETAINER,ELECTRICAL CONNECTOR
970653-1
5330-00-641-2010INTERCHANGEABLE
PACKING,PREFORMED
6625-00-828-9621INTERCHANGEABLE
TEST SET,POWER SUPPLY
2160-9
5950-00-831-2825INTERCHANGEABLE
REACTOR

Frequently Asked Questions

What is NSN 5950-00-510-1772?

NSN 5950-00-510-1772 is a Reactor, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-510-1772?

NSN 5950-00-510-1772 has 4 cross-referenced part numbers: 21609 (Emerson Electric Co White-Rodgers Div), SMC283220 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 25701 (Freed Transformer Co), 678-0755-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5950-00-510-1772?

There are 12 known substitutes for 5950-00-510-1772: 5977-00-038-1477, 4730-00-104-7393, 3040-00-149-2515 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25701?

Key specifications for 25701: Winding Quantity: 1 SINGLE COMPONENT; Overall Height: 3.625 INCHES MAXIMUM IN; Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT; Mounting Method: THREADED STUD(S) SINGLE GROUP. 21 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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