PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51B490Transformer,radio Frequency

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5950-00-188-6547 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-188-6547 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-188-6547. Primary manufacturer part number: 51B490.
Features
  • Transformer,radio Frequency — FSC 5950
  • Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Adjustment Method and Quantity: 1 ADJUSTABLE CORE SINGLE COMPONENT
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Coil Form Type: HOLLOW SINGLE COMPONENT
  • Body Length: 0.875 INCHES NOMINAL IN
  • Inclosure Type: OPEN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-188-6547, 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 Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN5950-00-188-6547
Primary Part Number51B490
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusACTIVE
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Adjustment Method and Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Thread Quantity Per Inch32 SINGLE GROUP
Coil Form TypeHOLLOW SINGLE COMPONENT
Body Length0.875 INCHES NOMINAL IN
Inclosure TypeOPEN
Terminal Type and Quantity3 TAB, SOLDER LUG
Winding Conductor Size0.02257 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
Mounting Facility Quantity1 SINGLE GROUP
Frequency Rating4.0 MEGAHERTZ MINIMUM AND 6.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY SINGLE COMPONENT
Turn Quantity35 SINGLE COMPONENT SINGLE PRIMARY
Body Outside Diameter0.625 INCHES NOMINAL IN
Mounting MethodCORE AND THREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5815-00-076-7744 INTERCHANGEABLE
Teletypewriter Subassembly
2815-00-166-5184485-2 INTERCHANGEABLE
Cylinder Sleeve
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5930-00-225-9238 INTERCHANGEABLE
Switch,sensitive
4730-00-338-30234852 INTERCHANGEABLE
Strainer Element,sediment
Schneider Electric Systems Usa Inc
3010-00-365-19961K1482 INTERCHANGEABLE
Collar,clutch Cone
Caterpillar Inc Div Caterpillar Defense
5310-00-370-00224852 INTERCHANGEABLE
Washer,lock
Telemechanics Inc
8010-00-431-6212 INTERCHANGEABLE
Remover,paint
1015-00-557-37085573708 INTERCHANGEABLE
Guard,brake Drum
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1680-00-690-21994852 INTERCHANGEABLE
Link,track Mechanis
B/e Aerospace Inc Dba Interturbine
5940-00-810-9080 INTERCHANGEABLE
Terminal,lug
Cross-Reference Index
Part NumberManufacturer
51B490 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
51A490 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
4852 Emerson Electric Co White-Rodgers Div (USA)
Related Parts
5815-00-076-7744INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
2815-00-166-5184INTERCHANGEABLE
CYLINDER SLEEVE
485-2
5930-00-225-9238INTERCHANGEABLE
SWITCH,SENSITIVE
4730-00-338-3023INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
4852
3010-00-365-1996INTERCHANGEABLE
COLLAR,CLUTCH CONE
1K1482
5310-00-370-0022INTERCHANGEABLE
WASHER,LOCK
4852
8010-00-431-6212INTERCHANGEABLE
REMOVER,PAINT
1015-00-557-3708INTERCHANGEABLE
GUARD,BRAKE DRUM
5573708
1680-00-690-2199INTERCHANGEABLE
LINK,TRACK MECHANIS
4852
5940-00-810-9080INTERCHANGEABLE
TERMINAL,LUG
5310-00-827-9141INTERCHANGEABLE
NUT,PLAIN,HEXAGON
50-56011-1
5360-00-895-0503INTERCHANGEABLE
SPRING,SPIRAL,TORSION
4852

Frequently Asked Questions

What is NSN 5950-00-188-6547?

NSN 5950-00-188-6547 is a Transformer,radio Frequency, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-188-6547?

NSN 5950-00-188-6547 has 3 cross-referenced part numbers: 51B490 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 51A490 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 4852 (Emerson Electric Co White-Rodgers Div).

What NSN replaces 5950-00-188-6547?

There are 12 known substitutes for 5950-00-188-6547: 5815-00-076-7744, 2815-00-166-5184, 5930-00-225-9238 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51B490?

Key specifications for 51B490: Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP; Adjustment Method and Quantity: 1 ADJUSTABLE CORE SINGLE COMPONENT; Thread Quantity Per Inch: 32 SINGLE GROUP. 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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