PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55381Reactor

Hamilton Sundstrand Corporation · NSN 5950-00-270-4521 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-270-4521 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-270-4521. Primary manufacturer part number: 55381.
Features
  • Reactor — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Body Outside Diameter: 0.625 INCHES MAXIMUM IN
  • Winding Conductor Size: 0.00631 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
  • Inclosure Type: FULLY INCLOSED
  • Inductance Type: FIXED
  • Turn Quantity: 260 SINGLE COMPONENT SINGLE WINDING
  • Terminal Type and Quantity: 2 PIN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-270-4521, 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 Hamilton Sundstrand Corporation. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-270-4521
Primary Part Number55381
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Body Outside Diameter0.625 INCHES MAXIMUM IN
Winding Conductor Size0.00631 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
Inclosure TypeFULLY INCLOSED
Inductance TypeFIXED
Turn Quantity260 SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 PIN
Frequency Rating1.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Rating MethodELECTRICAL AND WINDING TURNS SINGLE COMPONENT SINGLE WINDING
Winding Quantity1 SINGLE COMPONENT
Distance Between Mounting Facility Centers0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length0.300 INCHES MAXIMUM IN
Mounting MethodTERMINAL SINGLE GROUP
Inductance Rating2.35 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
1650-00-887-682855388 INTERCHANGEABLE
Parts Kit,valve
Woodward Hrt Inc
2910-01-038-15094049337 INTERCHANGEABLE
Pump,fuel,cam Actuated
Chrysler Corp Service and Parts Opns
5930-01-043-616255381 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
5315-01-094-907655381 INTERCHANGEABLE
Pin,grooved,headed
L3 Technologies, Inc. Div L3 Keo
5331-01-119-136555381 INTERCHANGEABLE
O-Ring
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
6625-01-229-87745032 INTERCHANGEABLE
Heat Source
Santa Barbara Infrared, Inc. Dba Santa Barbara Infrared Inc
5340-01-676-502155-381 INTERCHANGEABLE
Bracket,angle
Edmund Optics, Inc
Cross-Reference Index
Part NumberManufacturer
SE121-1043 Gulton Industries Inc Standard Electronics Div (USA)
55381 PRIMARY Hamilton Sundstrand Corporation (USA)
X69-210 El-Rad Mfg Co (USA)
30-9559 Magnetic Components Inc (USA)
Related Parts
1650-00-887-6828INTERCHANGEABLE
PARTS KIT,VALVE
55388
2910-01-038-1509INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
4049337
5930-01-043-6162INTERCHANGEABLE
SWITCH,FLOW
55381
5315-01-094-9076INTERCHANGEABLE
PIN,GROOVED,HEADED
55381
5331-01-119-1365INTERCHANGEABLE
O-RING
55381
6625-01-229-8774INTERCHANGEABLE
HEAT SOURCE
5032
5340-01-676-5021INTERCHANGEABLE
BRACKET,ANGLE
55-381

Frequently Asked Questions

What is NSN 5950-00-270-4521?

NSN 5950-00-270-4521 is a Reactor, manufactured by Hamilton Sundstrand Corporation, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-270-4521?

NSN 5950-00-270-4521 has 4 cross-referenced part numbers: SE121-1043 (Gulton Industries Inc Standard Electronics Div), 55381 (Hamilton Sundstrand Corporation), X69-210 (El-Rad Mfg Co), 30-9559 (Magnetic Components Inc).

What NSN replaces 5950-00-270-4521?

There are 7 known substitutes for 5950-00-270-4521: 1650-00-887-6828, 2910-01-038-1509, 5930-01-043-6162 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55381?

Key specifications for 55381: Reliability Indicator: NOT ESTABLISHED; Body Outside Diameter: 0.625 INCHES MAXIMUM IN; Winding Conductor Size: 0.00631 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN; Inclosure Type: FULLY INCLOSED. 14 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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