PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1851640Transformer,radio Frequency

Northrop Grumman Systems Corporation · NSN 5950-00-020-8976 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-020-8976 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-020-8976. Primary manufacturer part number: 1851640.
Features
  • Transformer,radio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Conductor Size: 0.01594 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
  • Coil Form Type: SOLID SINGLE COMPONENT
  • Inclosure Type: OPEN
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Mounting Hole Diameter: 0.375 INCHES MINIMUM SINGLE GROUP IN
  • Winding Conductor Size: 0.02010 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-020-8976, 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 Northrop Grumman Systems Corporation. Government technical data includes 17 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-020-8976
Primary Part Number1851640
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Conductor Size0.01594 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
Coil Form TypeSOLID SINGLE COMPONENT
Inclosure TypeOPEN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.375 INCHES MINIMUM SINGLE GROUP IN
Winding Conductor Size0.02010 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
Body Length0.750 INCHES MAXIMUM IN
Rating MethodWINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
Body Outside Diameter2.000 INCHES MAXIMUM IN
Turn Quantity400 SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting Facility Quantity1 SINGLE GROUP
Features ProvidedCOLOR CODED TERMINAL
Turn Quantity400 SINGLE COMPONENT SINGLE SECONDARY
Terminal Type and Quantity5 WIRE LEAD
Rating MethodWINDING TURNS SINGLE COMPONENT SINGLE PRIMARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4140-00-007-2340 INTERCHANGEABLE
Impeller,fan,axial
1005-00-019-79256210 INTERCHANGEABLE
Slide
Smith & Wesson Sales Company
5440-00-061-8899FS1510 INTERCHANGEABLE
Stepladder
Louisville Ladder Inc
3110-00-144-8540113276-17 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4730-00-277-387442F-10 INTERCHANGEABLE
Nipple,tube
Fd Johnson Co
5975-00-280-6079 INTERCHANGEABLE
Locknut,electrical Conduit
5310-00-281-5359 INTERCHANGEABLE
Nut,plain,castellated,hexagon
1680-00-303-30536210 INTERCHANGEABLE
Dipstick and Cap As
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
1660-00-337-53576210 INTERCHANGEABLE
Coupling Assembly,breathing Tube
Avox Systems Inc Dba Avox Systems Inc
3110-00-542-0021 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
1851640 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1851640 PRIMARY Northrop Grumman Systems Corporation (USA)
TW151199 Magnetika (USA)
6210 Standex Electronics, Inc. (USA)
Related Parts
4140-00-007-2340INTERCHANGEABLE
IMPELLER,FAN,AXIAL
1005-00-019-7925INTERCHANGEABLE
SLIDE
6210
5440-00-061-8899INTERCHANGEABLE
STEPLADDER
FS1510
3110-00-144-8540INTERCHANGEABLE
BEARING,BALL,ANNULAR
113276-17
4730-00-277-3874INTERCHANGEABLE
NIPPLE,TUBE
42F-10
5975-00-280-6079INTERCHANGEABLE
LOCKNUT,ELECTRICAL CONDUIT
5310-00-281-5359INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
1680-00-303-3053INTERCHANGEABLE
DIPSTICK AND CAP AS
6210
1660-00-337-5357INTERCHANGEABLE
COUPLING ASSEMBLY,BREATHING TUBE
6210
3110-00-542-0021INTERCHANGEABLE
BEARING,BALL,ANNULAR
5920-00-548-3125INTERCHANGEABLE
FUSE,CARTRIDGE
5950-00-648-1033INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
SGM9

Frequently Asked Questions

What is NSN 5950-00-020-8976?

NSN 5950-00-020-8976 is a Transformer,radio Frequency, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-020-8976?

NSN 5950-00-020-8976 has 4 cross-referenced part numbers: 1851640 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1851640 (Northrop Grumman Systems Corporation), TW151199 (Magnetika), 6210 (Standex Electronics, Inc.).

What NSN replaces 5950-00-020-8976?

There are 12 known substitutes for 5950-00-020-8976: 4140-00-007-2340, 1005-00-019-7925, 5440-00-061-8899 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1851640?

Key specifications for 1851640: Reliability Indicator: NOT ESTABLISHED; Winding Conductor Size: 0.01594 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN; Coil Form Type: SOLID SINGLE COMPONENT; Inclosure Type: OPEN. 17 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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