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51A490 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TRANSFORMER,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_length: 0.875 INCHES NOMINAL IN, turn_quantity: 35 SINGLE COMPONENT SINGLE PRIMARY, coil_form_type: HOLLOW SINGLE COMPONENT, inclosure_type: OPEN, mounting_method: CORE AND THREADED HOLE(S) SINGLE GROUP, frequency_rating: 4.0 MEGAHERTZ MINIMUM AND 6.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-188-6547, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
51A490
NSN: 5950-00-188-6547
FSC: 5950
CAGE: 26916 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP DIV MULTIPLE (USA)
SPECIFICATIONS
body_length0.875 INCHES NOMINAL IN
turn_quantity35 SINGLE COMPONENT SINGLE PRIMARY
coil_form_typeHOLLOW SINGLE COMPONENT
inclosure_typeOPEN
mounting_methodCORE AND THREADED HOLE(S) SINGLE GROUP
frequency_rating4.0 MEGAHERTZ MINIMUM AND 6.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
body_outside_diameter0.625 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
winding_conductor_size0.02257 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN5950-00-188-6547
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,RADIO FREQUENCY TITLE COMPONENT PN 51A490 MFR TRANSFORMER,RADIO FREQ
KEY FEATURES
•
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
•
TERMINAL TYPE AND QUANTITY: 3 TAB, SOLDER LUG
TECHNICAL CHARACTERISTICS (FLIS)
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
4852Interchangeable
interchangeable cross-reference
interchangeable
04852Interchangeable
interchangeable cross-reference
interchangeable
6002-679Interchangeable
interchangeable cross-reference
interchangeable
C99L12Interchangeable
interchangeable cross-reference
interchangeable
45550-013-16Interchangeable
interchangeable cross-reference
interchangeable
1-5482Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51A490?
51A490 is a TRANSFORMER,RADIO FREQUENCY.
What parts can replace 51A490?
There are 11 known substitutes for 51A490: 4852, 04852, 6002-679 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51A490?
51A490 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-188-6547. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026