PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SM-A-858457Reactor

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 5950-01-121-4322 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-121-4322 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-121-4322. Primary manufacturer part number: SM-A-858457.
Features
  • Reactor — FSC 5950
  • Winding Quantity: 1 SINGLE COMPONENT
  • Body Outside Diameter: 0.406 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 2 PIN
  • Reliability Indicator: NOT ESTABLISHED
  • DC Resistance Rating in Ohms: 49.000 SINGLE COMPONENT SINGLE WINDING
  • Maximum Operating Temp: 105.0 CELSIUS DEGC
  • Inductance Rating: 15.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-01-121-4322, 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 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-121-4322
Primary Part NumberSM-A-858457
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Winding Quantity1 SINGLE COMPONENT
Body Outside Diameter0.406 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
Terminal Type and Quantity2 PIN
Reliability IndicatorNOT ESTABLISHED
DC Resistance Rating in Ohms49.000 SINGLE COMPONENT SINGLE WINDING
Maximum Operating Temp105.0 CELSIUS DEGC
Inductance Rating15.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Frequency Rating1.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Inductance TypeFIXED
Body Length0.281 INCHES MAXIMUM IN
Mounting MethodTERMINAL SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6625-01-138-74044324-2 INTERCHANGEABLE
Divider,power,radio Frequency
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
3040-01-246-312343242 INTERCHANGEABLE
Control Assembly,push-Pull
Brunswick Corp Dba Mercury Marine Div Mercury Marine
5330-01-272-644545683 AND 45686 AND 45687 INTERCHANGEABLE
Seal,plain
Bourns Inc
2840-01-294-505543242 INTERCHANGEABLE
Stiffener,hot Gas Service Adapte
Williams International Co., L.l.c.
4820-01-497-058043242 INTERCHANGEABLE
Valve,globe
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
Cross-Reference Index
Part NumberManufacturer
TW64544 Magnetika (USA)
ALF573 United Transformer Corp Sub of Opt Industries Inc (USA)
SM-A-858457 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
EWC3908 Inrcore, Llc Div Inrcore (USA)
43242 Coast/advanced Chip Magnetics, Inc. (USA)
ALF573 Magnetika Inc (USA)
EWC3908 Technitrol, Inc. Dba Pulse Div Military/aerospace (USA)
Related Parts
6625-01-138-7404INTERCHANGEABLE
DIVIDER,POWER,RADIO FREQUENCY
4324-2
3040-01-246-3123INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
43242
5330-01-272-6445INTERCHANGEABLE
SEAL,PLAIN
45683 AND 45686 AND 45687
2840-01-294-5055INTERCHANGEABLE
STIFFENER,HOT GAS SERVICE ADAPTE
43242
4820-01-497-0580INTERCHANGEABLE
VALVE,GLOBE
43242

Frequently Asked Questions

What is NSN 5950-01-121-4322?

NSN 5950-01-121-4322 is a Reactor, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-121-4322?

NSN 5950-01-121-4322 has 7 cross-referenced part numbers: TW64544 (Magnetika), ALF573 (United Transformer Corp Sub of Opt Industries Inc), SM-A-858457 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), EWC3908 (Inrcore, Llc Div Inrcore), 43242 (Coast/advanced Chip Magnetics, Inc.) and 2 more.

What NSN replaces 5950-01-121-4322?

There are 5 known substitutes for 5950-01-121-4322: 6625-01-138-7404, 3040-01-246-3123, 5330-01-272-6445 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SM-A-858457?

Key specifications for SM-A-858457: Winding Quantity: 1 SINGLE COMPONENT; Body Outside Diameter: 0.406 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN; Terminal Type and Quantity: 2 PIN; Reliability Indicator: NOT ESTABLISHED. 13 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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