PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37557Reactor

Freed Transformer Co · NSN 5950-00-827-5191 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-827-5191 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-827-5191. Primary manufacturer part number: 37557.
Features
  • Reactor — FSC 5950
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Current: 200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • Terminal Type and Quantity: 2 TAB, SOLDER LUG
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Quantity: 1 SINGLE COMPONENT
  • Mounting Method: THREADED HOLE(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 5950-00-827-5191, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-827-5191
Primary Part Number37557
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Width1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 TAB, SOLDER LUG
Mounting Facility Quantity4 SINGLE GROUP
Winding Quantity1 SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeFULLY INCLOSED
Inductance Rating250.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
DC Resistance Rating in Ohms30.000 SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Thread Quantity Per Inch40 SINGLE GROUP
Inductance TypeFIXED
Body Length1.406 INCHES NOMINAL IN
Body Height1.000 INCHES NOMINAL IN
Body Width1.406 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5110-00-224-88385110-00-224-8838 INTERCHANGEABLE
Cleaner,valve Stem Guide
General Services Administration Federal Supply Service
3040-01-316-05673755-7 INTERCHANGEABLE
Weight,counterbalance
Naval Air Warfare Ctr Aircraft Div
4710-01-399-098937557 INTERCHANGEABLE
Tube,metallic
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
37557 PRIMARY Freed Transformer Co (USA)
668-0464-010 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
5110-00-224-8838INTERCHANGEABLE
CLEANER,VALVE STEM GUIDE
5110-00-224-8838
3040-01-316-0567INTERCHANGEABLE
WEIGHT,COUNTERBALANCE
3755-7
4710-01-399-0989INTERCHANGEABLE
TUBE,METALLIC
37557

Frequently Asked Questions

What is NSN 5950-00-827-5191?

NSN 5950-00-827-5191 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 5950-00-827-5191?

NSN 5950-00-827-5191 has 2 cross-referenced part numbers: 37557 (Freed Transformer Co), 668-0464-010 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5950-00-827-5191?

There are 3 known substitutes for 5950-00-827-5191: 5110-00-224-8838, 3040-01-316-0567, 4710-01-399-0989. Verify interchangeability with system specifications before substitution.

What are the specifications of 37557?

Key specifications for 37557: Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Operating Current: 200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING; Terminal Type and Quantity: 2 TAB, SOLDER LUG. 19 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