PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3721Reactor

Pulse Engineering Inc · NSN 5950-00-862-9444 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-862-9444 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-862-9444. Primary manufacturer part number: 3721.
Features
  • Reactor — FSC 5950
  • Body Length: 0.300 INCHES NOMINAL IN
  • Inductance Type: FIXED
  • Mounting Method: TERMINAL SINGLE GROUP
  • Winding Quantity: 1 SINGLE COMPONENT
  • Body Outside Diameter: 0.437 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 WIRE LEAD
  • DC Resistance Rating in Ohms: 63.000 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 5950-00-862-9444, 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 Pulse Engineering Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-862-9444
Primary Part Number3721
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerPulse Engineering Inc
StatusACTIVE
Body Length0.300 INCHES NOMINAL IN
Inductance TypeFIXED
Mounting MethodTERMINAL SINGLE GROUP
Winding Quantity1 SINGLE COMPONENT
Body Outside Diameter0.437 INCHES NOMINAL IN
Terminal Type and Quantity2 WIRE LEAD
DC Resistance Rating in Ohms63.000 SINGLE COMPONENT SINGLE WINDING
Inclosure TypeFULLY INCLOSED
Winding Operating Current16.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Inductance Rating20.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-154-49913721 INTERCHANGEABLE
Seal,plain Encased
Schindler Elevator Corporation
2530-00-192-8747 INTERCHANGEABLE
Cylinder,hydraulic Brake,wheel
5120-00-293-21363721 INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
5360-00-360-68993721 INTERCHANGEABLE
Spring,helical,torsion
Sachs-Boge of America
4920-00-435-9609372-1 INTERCHANGEABLE
Detector,voltage,test Set
General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations
5995-00-711-67607116760 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Army, United States Department of the Dba Rock Island Arsenal Jmtc
1730-00-786-7347 INTERCHANGEABLE
Repair Kit,bearing,
5998-00-827-2018 INTERCHANGEABLE
Circuit Card Assembly
4520-00-911-7979 INTERCHANGEABLE
Heating Element,electrical,nonim
5915-00-924-9599372-1 INTERCHANGEABLE
Filter,low Pass
American Trans-Coil Corp
Cross-Reference Index
Part NumberManufacturer
3721 PRIMARY Pulse Engineering Inc (USA)
Related Parts
5330-00-154-4991INTERCHANGEABLE
SEAL,PLAIN ENCASED
3721
2530-00-192-8747INTERCHANGEABLE
CYLINDER,HYDRAULIC BRAKE,WHEEL
5120-00-293-2136INTERCHANGEABLE
WRENCH,OPEN END
3721
5360-00-360-6899INTERCHANGEABLE
SPRING,HELICAL,TORSION
3721
4920-00-435-9609INTERCHANGEABLE
DETECTOR,VOLTAGE,TEST SET
372-1
5995-00-711-6760INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
7116760
1730-00-786-7347INTERCHANGEABLE
REPAIR KIT,BEARING,
5998-00-827-2018INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4520-00-911-7979INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
5915-00-924-9599INTERCHANGEABLE
FILTER,LOW PASS
372-1
8520-01-101-6948INTERCHANGEABLE
SHAMPOO
3721
5120-01-161-4543INTERCHANGEABLE
BIT,SCREWDRIVER
3-721

Frequently Asked Questions

What is NSN 5950-00-862-9444?

NSN 5950-00-862-9444 is a Reactor, manufactured by Pulse Engineering Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-862-9444?

NSN 5950-00-862-9444 has 1 cross-referenced part number: 3721 (Pulse Engineering Inc).

What NSN replaces 5950-00-862-9444?

There are 12 known substitutes for 5950-00-862-9444: 5330-00-154-4991, 2530-00-192-8747, 5120-00-293-2136 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3721?

Key specifications for 3721: Body Length: 0.300 INCHES NOMINAL IN; Inductance Type: FIXED; Mounting Method: TERMINAL SINGLE GROUP; Winding Quantity: 1 SINGLE COMPONENT. 10 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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