PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1857620Reactor

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-681-7499 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-681-7499 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-681-7499. Primary manufacturer part number: 1857620.
Features
  • Reactor — FSC 5950
  • Inductance Rating: 200.00 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Terminal Type and Quantity: 2 STANDOFF, SCREW
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Width: 2.625 INCHES NOMINAL IN
  • Inductance Type: FIXED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-681-7499, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-681-7499
Primary Part Number1857620
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Inductance Rating200.00 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Terminal Type and Quantity2 STANDOFF, SCREW
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Body Width2.625 INCHES NOMINAL IN
Inductance TypeFIXED
Winding Operating Current33.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Length3.062 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Quantity1 SINGLE COMPONENT
Body Height4.250 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.297 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Quantity Per Inch32 SINGLE GROUP
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Inclosure TypeHERMETICALLY SEALED
DC Resistance Rating in Ohms0.020 SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Width1.859 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5305-00-013-2844104129 INTERCHANGEABLE
Screw,machine
Garwood/feller Inc Garwood Winch Div
8040-00-726-3567 INTERCHANGEABLE
Adhesive
5940-00-933-7901 INTERCHANGEABLE
Terminal Board
5935-00-946-920451-028-0109 INTERCHANGEABLE
Connector,plug,electrical
Itt Cannon Rf Products
3040-01-237-18125561 INTERCHANGEABLE
Shoe,sliding
Megator Corp
5998-01-335-53375561 INTERCHANGEABLE
Circuit Card Assembly
Data Device Corp Dba Beta Transformer Technology
6150-01-356-81411857620 INTERCHANGEABLE
Wiring Harness,branched
Oshkosh Defense Llc
6515-01-519-82525561 INTERCHANGEABLE
Blade,surgical Knife,detachable
Howards Instruments
2590-01-597-6057 INTERCHANGEABLE
Clevis Foot Mount
7025-01-620-982943W7633 INTERCHANGEABLE
Disk Drive Unit
International Business Machines Corporation Dba IBM
Cross-Reference Index
Part NumberManufacturer
1857620 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
435725 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1003472 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
W-10620 Unisys Corp Systems Development (USA)
435725 Lockheed Martin Corporation Div Rms (USA)
5561 Precision Electronics, Inc (USA)
840477 North Erie Electronics, Inc Dba Fisher Engineering (USA)
Related Parts
5305-00-013-2844INTERCHANGEABLE
SCREW,MACHINE
104129
8040-00-726-3567INTERCHANGEABLE
ADHESIVE
5940-00-933-7901INTERCHANGEABLE
TERMINAL BOARD
5935-00-946-9204INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
51-028-0109
3040-01-237-1812INTERCHANGEABLE
SHOE,SLIDING
5561
5998-01-335-5337INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5561
6150-01-356-8141INTERCHANGEABLE
WIRING HARNESS,BRANCHED
1857620
6515-01-519-8252INTERCHANGEABLE
BLADE,SURGICAL KNIFE,DETACHABLE
5561
2590-01-597-6057INTERCHANGEABLE
CLEVIS FOOT MOUNT
7025-01-620-9829INTERCHANGEABLE
DISK DRIVE UNIT
43W7633

Frequently Asked Questions

What is NSN 5950-00-681-7499?

NSN 5950-00-681-7499 is a Reactor, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-681-7499?

NSN 5950-00-681-7499 has 7 cross-referenced part numbers: 1857620 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 435725 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1003472 (Lockheed Martin Corporation Div Rms - Mitchel Field), W-10620 (Unisys Corp Systems Development), 435725 (Lockheed Martin Corporation Div Rms) and 2 more.

What NSN replaces 5950-00-681-7499?

There are 10 known substitutes for 5950-00-681-7499: 5305-00-013-2844, 8040-00-726-3567, 5940-00-933-7901 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1857620?

Key specifications for 1857620: Inductance Rating: 200.00 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING; Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN; Terminal Type and Quantity: 2 STANDOFF, SCREW; Reliability Indicator: NOT ESTABLISHED. 19 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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