PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52661-1Reactor

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5950-00-645-1219 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-1219 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-1219. Primary manufacturer part number: 52661-1.
Features
  • Reactor — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Nominal Thread Size: 0.164 INCHES SINGLE GROUP IN
  • Inclosure Type: HERMETICALLY SEALED
  • Body Length: 2.469 INCHES NOMINAL IN
  • Body Height: 3.594 INCHES NOMINAL IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Thread Quantity Per Inch: 32 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-645-1219, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 20 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-645-1219
Primary Part Number52661-1
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Inclosure TypeHERMETICALLY SEALED
Body Length2.469 INCHES NOMINAL IN
Body Height3.594 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current100.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Winding Quantity1 SINGLE COMPONENT
Terminal Type and Quantity2 STANDOFF, SOLDER LUG
Frequency Rating360.0 HERTZ NOMINAL SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length1.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width2.344 INCHES NOMINAL IN
DC Resistance Rating in Ohms250.000 SINGLE COMPONENT SINGLE WINDING
Inductance TypeFIXED
Center to Center Distance Between Mounting Facilities Parallel to Width1.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Inductance Rating10.00 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
7040-00-019-2002 INTERCHANGEABLE
Segiment,engraved
3455-00-808-429515811 INTERCHANGEABLE
Cutter,milling,end
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5342-00-870-080243538 INTERCHANGEABLE
Bracket
Raytheon Company Dba Raytheon
5977-00-920-5393 INTERCHANGEABLE
Electrode,carbon,lighting
4730-01-340-537443538 INTERCHANGEABLE
Restrictor,fluid Flow
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5120-01-398-7692 INTERCHANGEABLE
Extension,socket Wrench
Cross-Reference Index
Part NumberManufacturer
43538 Freed Transformer Co (USA)
52661-1 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
7040-00-019-2002INTERCHANGEABLE
SEGIMENT,ENGRAVED
3455-00-808-4295INTERCHANGEABLE
CUTTER,MILLING,END
15811
5342-00-870-0802INTERCHANGEABLE
BRACKET
43538
5977-00-920-5393INTERCHANGEABLE
ELECTRODE,CARBON,LIGHTING
4730-01-340-5374INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
43538
5120-01-398-7692INTERCHANGEABLE
EXTENSION,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5950-00-645-1219?

NSN 5950-00-645-1219 is a Reactor, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-1219?

NSN 5950-00-645-1219 has 2 cross-referenced part numbers: 43538 (Freed Transformer Co), 52661-1 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5950-00-645-1219?

There are 6 known substitutes for 5950-00-645-1219: 7040-00-019-2002, 3455-00-808-4295, 5342-00-870-0802 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52661-1?

Key specifications for 52661-1: Reliability Indicator: NOT ESTABLISHED; Nominal Thread Size: 0.164 INCHES SINGLE GROUP IN; Inclosure Type: HERMETICALLY SEALED; Body Length: 2.469 INCHES NOMINAL IN. 20 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com