PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19943Reactor

Freed Transformer Co · NSN 5950-00-645-4997 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-4997 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-4997. Primary manufacturer part number: 19943.
Features
  • Reactor — FSC 5950
  • Inductance Type: FIXED
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Reliability Indicator: NOT ESTABLISHED
  • Terminal Type and Quantity: 2 SOLDER STUD
  • Inductance Rating: 28.00 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Winding Operating Current: 100.0 MILLIAMPERES DC MAXIMUM 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 5950-00-645-4997, 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 Freed Transformer Co. Government technical data includes 19 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-645-4997
Primary Part Number19943
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusCANCELLED
Inductance TypeFIXED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Reliability IndicatorNOT ESTABLISHED
Terminal Type and Quantity2 SOLDER STUD
Inductance Rating28.00 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current100.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Body Width3.000 INCHES NOMINAL IN
DC Resistance Rating in Ohms500.000 SINGLE COMPONENT SINGLE WINDING
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width2.156 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.406 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height4.250 INCHES NOMINAL IN
Winding Quantity1 SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inclosure TypeHERMETICALLY SEALED
Body Length3.125 INCHES NOMINAL IN
Thread Quantity Per Inch32 SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5360-00-020-3361 INTERCHANGEABLE
Spring,cam Actuating
5935-00-083-401019943 INTERCHANGEABLE
Connector,receptacle,electrical
Moog Military Aircraft Llc
3895-00-161-1395 INTERCHANGEABLE
Gland
3455-00-232-4095168222 PIECE 1 INTERCHANGEABLE
Reamer,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5120-00-234-8912 INTERCHANGEABLE
Screwdriver,cross Tip
5340-00-392-5319 INTERCHANGEABLE
Clamp,bridge
5998-01-035-262419943 INTERCHANGEABLE
Circuit Card Assembly
Emcore Corporation Div Concord Division
5998-01-424-404219943 INTERCHANGEABLE
Circuit Card Assembly
Giga-Tronics Incorporated Dba Giga-Tronics
6515-01-471-7874496006 INTERCHANGEABLE
Introducer Kit,catheter,percutan
Maxxim Medical Inc
Cross-Reference Index
Part NumberManufacturer
19943 PRIMARY Freed Transformer Co (USA)
Related Parts
5360-00-020-3361INTERCHANGEABLE
SPRING,CAM ACTUATING
5935-00-083-4010INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
19943
3895-00-161-1395INTERCHANGEABLE
GLAND
3455-00-232-4095INTERCHANGEABLE
REAMER,MACHINE
168222 PIECE 1
5120-00-234-8912INTERCHANGEABLE
SCREWDRIVER,CROSS TIP
5340-00-392-5319INTERCHANGEABLE
CLAMP,BRIDGE
5998-01-035-2624INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
19943
5998-01-424-4042INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
19943
6515-01-471-7874INTERCHANGEABLE
INTRODUCER KIT,CATHETER,PERCUTAN
496006

Frequently Asked Questions

What is NSN 5950-00-645-4997?

NSN 5950-00-645-4997 is a Reactor, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-645-4997?

NSN 5950-00-645-4997 has 1 cross-referenced part number: 19943 (Freed Transformer Co).

What NSN replaces 5950-00-645-4997?

There are 9 known substitutes for 5950-00-645-4997: 5360-00-020-3361, 5935-00-083-4010, 3895-00-161-1395 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19943?

Key specifications for 19943: Inductance Type: FIXED; Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING; Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN; Reliability Indicator: NOT ESTABLISHED. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-645-4997 still in active supply?

NSN 5950-00-645-4997 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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