PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25701Reactor

Freed Transformer Co · NSN 5950-00-831-2825 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-831-2825 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-831-2825. Primary manufacturer part number: 25701.
Features
  • Reactor — FSC 5950
  • Body Height: 3.125 INCHES NOMINAL IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.437 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Quantity: 1 SINGLE COMPONENT
  • Reliability Indicator: NOT ESTABLISHED
  • Inductance Type: SWINGING
  • Body Width: 2.062 INCHES NOMINAL IN
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-831-2825, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-831-2825
Primary Part Number25701
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Body Height3.125 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length1.437 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Quantity1 SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Inductance TypeSWINGING
Body Width2.062 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.687 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inductance Rating2.50 HENRY MINIMUM AND 12.50 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
Thread Quantity Per Inch32 SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms137.000 SINGLE COMPONENT SINGLE WINDING
Winding Operating Current20.0 MILLIAMPERES DC MINIMUM AND 200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Inclosure TypeHERMETICALLY SEALED
Terminal Type and Quantity2 TAB, SOLDER LUG
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Length2.312 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4730-00-104-739327910-2 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
Collins Engine Nozzles, Inc
5950-00-163-9319 INTERCHANGEABLE
Reactor
4520-00-478-5858 INTERCHANGEABLE
Heating Element,electrical,immer
5962-00-481-864225701-I-C INTERCHANGEABLE
Microcircuit,linear
Emcore Corporation Div Concord Division
5950-00-510-177225701 INTERCHANGEABLE
Reactor
Freed Transformer Co
5330-00-641-2010 INTERCHANGEABLE
Packing,preformed
5305-01-121-842610549 INTERCHANGEABLE
Screw,cap,socket Head
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
5915-01-142-7075A-025701 INTERCHANGEABLE
Filter,high Pass
Miller Electric Mfg. Llc
9150-01-439-085725701 INTERCHANGEABLE
Lubricating Oil,weapons
Mil-Comm Products Co, Inc Div Mil-Comm
6150-01-565-309925701 INTERCHANGEABLE
Cable Assembly,power,electrical
James Electronics Ltd Dba Jameco Electronics Div Jameco Electronics
Cross-Reference Index
Part NumberManufacturer
25701 Freed Transformer Co (USA)
678-0755-009 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
4730-00-104-7393INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
27910-2
5950-00-163-9319INTERCHANGEABLE
REACTOR
4520-00-478-5858INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,IMMER
5962-00-481-8642INTERCHANGEABLE
MICROCIRCUIT,LINEAR
25701-I-C
5950-00-510-1772INTERCHANGEABLE
REACTOR
25701
5330-00-641-2010INTERCHANGEABLE
PACKING,PREFORMED
5305-01-121-8426INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
10549
5915-01-142-7075INTERCHANGEABLE
FILTER,HIGH PASS
A-025701
9150-01-439-0857INTERCHANGEABLE
LUBRICATING OIL,WEAPONS
25701
6150-01-565-3099INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
25701

Frequently Asked Questions

What is NSN 5950-00-831-2825?

NSN 5950-00-831-2825 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 5950-00-831-2825?

NSN 5950-00-831-2825 has 2 cross-referenced part numbers: 25701 (Freed Transformer Co), 678-0755-009 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5950-00-831-2825?

There are 10 known substitutes for 5950-00-831-2825: 4730-00-104-7393, 5950-00-163-9319, 4520-00-478-5858 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25701?

Key specifications for 25701: Body Height: 3.125 INCHES NOMINAL IN; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.437 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Quantity: 1 SINGLE COMPONENT; Reliability Indicator: NOT ESTABLISHED. 19 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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