PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ML4Reactor

United Transformer Corp Sub of Opt Industries Inc · NSN 5950-01-199-8840 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-199-8840 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-199-8840. Primary manufacturer part number: ML4.
Features
  • Reactor — FSC 5950
  • Inductance Type: FIXED
  • Body Height: 0.563 INCHES NOMINAL IN
  • Inclosure Type: FULLY INCLOSED
  • Test Data Document: 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Body Length: 0.484 INCHES NOMINAL IN
  • Maximum Operating Temp: 105.0 CELSIUS DEGC
  • Terminal Type and Quantity: 2 WIRE LEAD
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-01-199-8840, 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 United Transformer Corp Sub of Opt Industries Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-01-199-8840
Primary Part NumberML4
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerUnited Transformer Corp Sub of Opt Industries Inc
StatusCANCELLED
Inductance TypeFIXED
Body Height0.563 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Test Data Document81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Body Length0.484 INCHES NOMINAL IN
Maximum Operating Temp105.0 CELSIUS DEGC
Terminal Type and Quantity2 WIRE LEAD
Specification/standard Data81349-MIL-T-27/164 GOVERNMENT SPECIFICATION
Body Width0.438 INCHES NOMINAL IN
Mounting MethodTERMINAL SINGLE GROUP
Inductance Rating1.40 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Winding Quantity1 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3510-00-152-82711638-40-178 INTERCHANGEABLE
Seal,grease
Ametek Inc Heat Transfer Div
6685-00-253-2553 INTERCHANGEABLE
Thermometer,self-Indicating
5950-01-100-5572 INTERCHANGEABLE
Reactor
5950-01-100-8226 INTERCHANGEABLE
Reactor
5950-01-104-4421 INTERCHANGEABLE
Reactor
5950-01-104-4423 INTERCHANGEABLE
Reactor
5950-01-104-4428 INTERCHANGEABLE
Reactor
5950-01-104-5424 INTERCHANGEABLE
Reactor
5950-01-109-7161 INTERCHANGEABLE
Reactor
5950-01-114-3258 INTERCHANGEABLE
Reactor
Cross-Reference Index
Part NumberManufacturer
ML4 United Transformer Corp Sub of Opt Industries Inc (USA)
M27/164-05 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-27/164 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-27/164 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
C2016160-2 General Dynamics Mission Systems, Inc. (USA)
ML4 Magnetika Inc Div Magnetika/phillipsburg Location (USA)
SM-C-2016160-2 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
Related Parts
3510-00-152-8271INTERCHANGEABLE
SEAL,GREASE
1638-40-178
6685-00-253-2553INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
5950-01-100-5572INTERCHANGEABLE
REACTOR
5950-01-100-8226INTERCHANGEABLE
REACTOR
5950-01-104-4421INTERCHANGEABLE
REACTOR
5950-01-104-4423INTERCHANGEABLE
REACTOR
5950-01-104-4428INTERCHANGEABLE
REACTOR
5950-01-104-5424INTERCHANGEABLE
REACTOR
5950-01-109-7161INTERCHANGEABLE
REACTOR
5950-01-114-3258INTERCHANGEABLE
REACTOR
5950-01-144-9818INTERCHANGEABLE
REACTOR
5950-01-255-8405INTERCHANGEABLE
REACTOR

Frequently Asked Questions

What is NSN 5950-01-199-8840?

NSN 5950-01-199-8840 is a Reactor, manufactured by United Transformer Corp Sub of Opt Industries Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-01-199-8840?

NSN 5950-01-199-8840 has 7 cross-referenced part numbers: ML4 (United Transformer Corp Sub of Opt Industries Inc), M27/164-05 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-27/164 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-27/164 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), C2016160-2 (General Dynamics Mission Systems, Inc.) and 2 more.

What NSN replaces 5950-01-199-8840?

There are 12 known substitutes for 5950-01-199-8840: 3510-00-152-8271, 6685-00-253-2553, 5950-01-100-5572 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ML4?

Key specifications for ML4: Inductance Type: FIXED; Body Height: 0.563 INCHES NOMINAL IN; Inclosure Type: FULLY INCLOSED; Test Data Document: 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-199-8840 still in active supply?

NSN 5950-01-199-8840 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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