PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A249Transformer,radio Frequency

Nytronics Inc · NSN 5950-00-227-9143 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-227-9143 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-227-9143. Primary manufacturer part number: A249.
Features
  • Transformer,radio Frequency — FSC 5950
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Inductance Rating: 420.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Coil Form Type: HOLLOW SINGLE COMPONENT
  • Winding Conductor Size: 0.00795 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
  • Inclosure Type: FULLY INCLOSED
  • Mounting Facility Quantity: 2 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-227-9143, 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 Nytronics Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-227-9143
Primary Part NumberA249
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNytronics Inc
StatusACTIVE
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Inductance Rating420.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Coil Form TypeHOLLOW SINGLE COMPONENT
Winding Conductor Size0.00795 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
Inclosure TypeFULLY INCLOSED
Mounting Facility Quantity2 SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Turn Quantity300 SINGLE COMPONENT SINGLE PRIMARY
Body Width1.281 INCHES NOMINAL IN
Turn Quantity150 SINGLE COMPONENT SINGLE SECONDARY
Frequency Rating100.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Terminal Type and Quantity5 TAB, SOLDER LUG
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE SECONDARY
Body Length2.250 INCHES NOMINAL IN
Adjustment Method and Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Height1.281 INCHES NOMINAL IN
Distance Between Mounting Facility Centers1.344 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Rating MethodWINDING TURNS AND ELECTRICAL SINGLE COMPONENT SINGLE PRIMARY
Thread Quantity Per Inch32 SINGLE GROUP
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Inductance Rating1.20 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5360-00-006-3771 INTERCHANGEABLE
Spring,special
4730-00-012-79510112578 INTERCHANGEABLE
Plug,pipe
Rolls-Royce Solutions America Inc
5950-00-163-7141278-0386-010 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4320-00-218-4478A249 INTERCHANGEABLE
Impeller,pump,centrifugal
Circor Naval Solutions Llc Dba Warren Pumps
5935-00-321-497230047-2 INTERCHANGEABLE
Connector,receptacle,electrical
Electric Regulator Corp
5950-00-646-4103 INTERCHANGEABLE
Transformer,radio Frequency
6640-00-730-0309A1503-3 INTERCHANGEABLE
Pipet,dropping
Met-Pro Corporation
5999-00-772-19436307-3251505REV0ITEM3A INTERCHANGEABLE
Contact,electrical
Naval Ship Systems Command
4610-01-259-80013004-72 INTERCHANGEABLE
Flap,protective
Pentair Filtration Solutions, Llc
Cross-Reference Index
Part NumberManufacturer
A249 Nytronics Inc (USA)
300-472 Fada Radio and Electric Co Inc (USA)
Related Parts
5360-00-006-3771INTERCHANGEABLE
SPRING,SPECIAL
4730-00-012-7951INTERCHANGEABLE
PLUG,PIPE
0112578
5950-00-163-7141INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
278-0386-010
4320-00-218-4478INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
A249
5935-00-321-4972INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
30047-2
5950-00-646-4103INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6640-00-730-0309INTERCHANGEABLE
PIPET,DROPPING
A1503-3
5999-00-772-1943INTERCHANGEABLE
CONTACT,ELECTRICAL
6307-3251505REV0ITEM3A
4610-01-259-8001INTERCHANGEABLE
FLAP,PROTECTIVE
3004-72

Frequently Asked Questions

What is NSN 5950-00-227-9143?

NSN 5950-00-227-9143 is a Transformer,radio Frequency, manufactured by Nytronics Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-227-9143?

NSN 5950-00-227-9143 has 2 cross-referenced part numbers: A249 (Nytronics Inc), 300-472 (Fada Radio and Electric Co Inc).

What NSN replaces 5950-00-227-9143?

There are 9 known substitutes for 5950-00-227-9143: 5360-00-006-3771, 4730-00-012-7951, 5950-00-163-7141 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A249?

Key specifications for A249: Mounting Method: THREADED STUD(S) SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Inductance Rating: 420.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Coil Form Type: HOLLOW SINGLE COMPONENT. 24 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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