PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12371Saturable Reactor

L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division · NSN 5950-00-646-3827 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-3827 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-3827. Primary manufacturer part number: 12371.
Features
  • Saturable Reactor — FSC 5950
  • Nominal Thread Size: 0.112 INCHES SINGLE GROUP IN
  • DC Resistance Rating in Ohms: 5340.000 SINGLE COMPONENT THIRD PRIMARY
  • Winding Operating Voltage: 5.80 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Saturation Current Rating: 300.0 MILLIAMPERES
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Frequency Rating: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Saturable Reactor, cataloged under National Stock Number 5950-00-646-3827, 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 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division. Government technical data includes 26 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-646-3827
Primary Part Number12371
Item NameSaturable Reactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerL3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division
StatusACTIVE
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
DC Resistance Rating in Ohms5340.000 SINGLE COMPONENT THIRD PRIMARY
Winding Operating Voltage5.80 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Saturation Current Rating300.0 MILLIAMPERES
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Winding Function and Quantity1 CONTROL AND 3 PRIMARY AND 5 SECONDARY SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Length6.094 INCHES MINIMUM AND 6.124 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Maximum Operating Temp105.0 CELSIUS DEGC
DC Resistance Rating in Ohms0.290 SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage25.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
DC Resistance Rating in Ohms6.600 SINGLE COMPONENT SECOND PRIMARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Power Rating189.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY
DC Resistance Rating in Ohms3.000 SINGLE COMPONENT FIRST PRIMARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Operating Voltage25.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage110.00 AC VOLTS MINIMUM AND 120.00 AC VOLTS MAXIMUM SINGLE COMPONENT ALL PRIMARY
DC Resistance Rating in Ohms1.000 SINGLE COMPONENT THIRD SECONDARY
DC Resistance Rating in Ohms1.200 SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage630.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE CONTROL
DC Resistance Rating in Ohms120.000 SINGLE COMPONENT SINGLE CONTROL
Terminal Type and Quantity24 WIRE LOOP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6610-00-064-9349123-0071 INTERCHANGEABLE
Probe Assembly,dete
Aerosonic Llc
5133-00-228-1405 INTERCHANGEABLE
Drill,twist
5950-00-232-7325 INTERCHANGEABLE
Reactor
5935-00-259-5323RE7-324-900 INTERCHANGEABLE
Connector,plug,electrical
Itt Cannon Llc
5133-00-262-2169 INTERCHANGEABLE
Drill,twist
6150-00-279-922712371 INTERCHANGEABLE
Lead,electrical
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5915-01-119-26551237-1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Specialty Lighting, Inc Div Specialty Lighting
5998-01-132-275712371 INTERCHANGEABLE
Printed Circuit Board
Versitron Inc
4730-01-271-285412371 INTERCHANGEABLE
Connector
Westerbeke Corporation
6520-01-333-969412371 INTERCHANGEABLE
Wheel,abrasive
Premier Dental Products Company
Cross-Reference Index
Part NumberManufacturer
12371 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division (USA)
12371 Inrcore, Llc Div Inrcore (USA)
Related Parts
6610-00-064-9349INTERCHANGEABLE
PROBE ASSEMBLY,DETE
123-0071
5133-00-228-1405INTERCHANGEABLE
DRILL,TWIST
5950-00-232-7325INTERCHANGEABLE
REACTOR
5935-00-259-5323INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
RE7-324-900
5133-00-262-2169INTERCHANGEABLE
DRILL,TWIST
6150-00-279-9227INTERCHANGEABLE
LEAD,ELECTRICAL
12371
5915-01-119-2655INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
1237-1
5998-01-132-2757INTERCHANGEABLE
PRINTED CIRCUIT BOARD
12371
4730-01-271-2854INTERCHANGEABLE
CONNECTOR
12371
6520-01-333-9694INTERCHANGEABLE
WHEEL,ABRASIVE
12371
6525-01-574-9114INTERCHANGEABLE
BOARD,USB,COMPUTED RADIOGRAPHY
500-0114-01

Frequently Asked Questions

What is NSN 5950-00-646-3827?

NSN 5950-00-646-3827 is a Saturable Reactor, manufactured by L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-646-3827?

NSN 5950-00-646-3827 has 2 cross-referenced part numbers: 12371 (L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division), 12371 (Inrcore, Llc Div Inrcore).

What NSN replaces 5950-00-646-3827?

There are 11 known substitutes for 5950-00-646-3827: 6610-00-064-9349, 5133-00-228-1405, 5950-00-232-7325 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12371?

Key specifications for 12371: Nominal Thread Size: 0.112 INCHES SINGLE GROUP IN; DC Resistance Rating in Ohms: 5340.000 SINGLE COMPONENT THIRD PRIMARY; Winding Operating Voltage: 5.80 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY; Saturation Current Rating: 300.0 MILLIAMPERES. 30 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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