PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37239Reactor

Freed Transformer Co · NSN 5950-00-552-8210 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-552-8210 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-552-8210. Primary manufacturer part number: 37239.
Features
  • Reactor — FSC 5950
  • Terminal Type and Quantity: 2 STANDOFF, SOLDER LUG
  • Frequency Rating: 120.0 HERTZ NOMINAL SINGLE COMPONENT
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Body Length: 5.031 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-552-8210, 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 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
NSN5950-00-552-8210
Primary Part Number37239
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Terminal Type and Quantity2 STANDOFF, SOLDER LUG
Frequency Rating120.0 HERTZ NOMINAL SINGLE COMPONENT
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Body Length5.031 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms0.149 SINGLE COMPONENT SINGLE WINDING
Inductance TypeSWINGING
Inductance Rating16.00 MILLIHENRIES MINIMUM AND 82.00 MILLIHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Body Height4.250 INCHES NOMINAL IN
Inclosure TypeHERMETICALLY SEALED
Winding Operating Current500.0 MILLIAMPERES DC MINIMUM AND 6.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length4.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Body Width4.000 INCHES NOMINAL IN
Winding Quantity1 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6520-00-935-660757190 INTERCHANGEABLE
Plastic Strip,dental Surface Pro
Mycone Dental Supply Co. Inc. Dba National Keystone Products
5962-01-081-96977266A15H02 INTERCHANGEABLE
Microcircuit,memory
Northrop Grumman Systems Corporation Dba Electronic Systems
4820-01-222-672662700A INTERCHANGEABLE
Retainer,disk,valve
Griswold Industries Dba Cla-Val Co
4820-01-286-0252627-00 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4720-01-545-144137239 INTERCHANGEABLE
Hose,nonmetallic
Fascan International, Inc.
5331-01-586-803962700 INTERCHANGEABLE
O-Ring
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
37239 PRIMARY Freed Transformer Co (USA)
62700 L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
6520-00-935-6607INTERCHANGEABLE
PLASTIC STRIP,DENTAL SURFACE PRO
57190
5962-01-081-9697INTERCHANGEABLE
MICROCIRCUIT,MEMORY
7266A15H02
4820-01-222-6726INTERCHANGEABLE
RETAINER,DISK,VALVE
62700A
4820-01-286-0252INTERCHANGEABLE
SEAT,VALVE
627-00
4720-01-545-1441INTERCHANGEABLE
HOSE,NONMETALLIC
37239
5331-01-586-8039INTERCHANGEABLE
O-RING
62700

Frequently Asked Questions

What is NSN 5950-00-552-8210?

NSN 5950-00-552-8210 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 5950-00-552-8210?

NSN 5950-00-552-8210 has 2 cross-referenced part numbers: 37239 (Freed Transformer Co), 62700 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5950-00-552-8210?

There are 6 known substitutes for 5950-00-552-8210: 6520-00-935-6607, 5962-01-081-9697, 4820-01-222-6726 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37239?

Key specifications for 37239: Terminal Type and Quantity: 2 STANDOFF, SOLDER LUG; Frequency Rating: 120.0 HERTZ NOMINAL SINGLE COMPONENT; Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN; Body Length: 5.031 INCHES NOMINAL IN. 21 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