PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SM-D-249239Transformer,radio Frequency

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 5950-00-523-8388 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-523-8388 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-523-8388. Primary manufacturer part number: SM-D-249239.
Features
  • Transformer,radio Frequency — FSC 5950
  • Coil Form Type: HOLLOW SINGLE COMPONENT
  • Features Provided: W/CAPACITOR AND W/RESISTOR
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Nominal Thread Size: 0.112 INCHES ALL GROUPINGS IN
  • Mounting Method: THREADED STUD(S) SECOND GROUP
  • Body Length: 0.828 INCHES MINIMUM AND 0.860 INCHES MAXIMUM 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 5950-00-523-8388, 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 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-523-8388
Primary Part NumberSM-D-249239
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Coil Form TypeHOLLOW SINGLE COMPONENT
Features ProvidedW/CAPACITOR AND W/RESISTOR
Reliability IndicatorNOT ESTABLISHED
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Nominal Thread Size0.112 INCHES ALL GROUPINGS IN
Mounting MethodTHREADED STUD(S) SECOND GROUP
Body Length0.828 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN
Winding Shielding MethodINTERNALLY SHIELDED SINGLE COMPONENT
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Distance Between Mounting Facility Centers0.558 INCHES MINIMUM AND 0.568 INCHES MAXIMUM SINGLE MOUNTING FACILITY FIRST CENTER GROUP IN
Inclosure TypeOPEN
Terminal Type and Quantity5 TAB, SOLDER LUG
Body Width0.828 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN
Frequency Rating455.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM SINGLE MOUNTING FACILITY SECOND CENTER GROUP IN
Body Height1.657 INCHES MINIMUM AND 2.033 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Length0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM SINGLE MOUNTING FACILITY SECOND CENTER GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL GROUPINGS
Adjustment Method and Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) FIRST GROUP
Mounting Facility Quantity2 FIRST GROUP
Mounting Facility Quantity4 SECOND GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-00-288-692415-1211 INTERCHANGEABLE
Valve,safety Relief
Dresser Industries Inc Leroi Div
3040-00-568-7942151211 INTERCHANGEABLE
Lever,manual Control
Telemechanics Inc
1630-00-612-0285151211 INTERCHANGEABLE
Pin,torque
Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)
5999-01-672-6693151211 INTERCHANGEABLE
Terminal,wire
Raytheon Company Div Corp
Cross-Reference Index
Part NumberManufacturer
SM-D-249239 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
278-0237-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
121-1 American Trans-Coil Corp (USA)
15-121-1 American Trans-Coil Corp (USA)
278-0237-000 Communication Coil, Inc. Div - (USA)
Related Parts
4820-00-288-6924INTERCHANGEABLE
VALVE,SAFETY RELIEF
15-1211
3040-00-568-7942INTERCHANGEABLE
LEVER,MANUAL CONTROL
151211
1630-00-612-0285INTERCHANGEABLE
PIN,TORQUE
151211
5999-01-672-6693INTERCHANGEABLE
TERMINAL,WIRE
151211

Frequently Asked Questions

What is NSN 5950-00-523-8388?

NSN 5950-00-523-8388 is a Transformer,radio Frequency, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-523-8388?

NSN 5950-00-523-8388 has 5 cross-referenced part numbers: SM-D-249239 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 278-0237-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 121-1 (American Trans-Coil Corp), 15-121-1 (American Trans-Coil Corp), 278-0237-000 (Communication Coil, Inc. Div -).

What NSN replaces 5950-00-523-8388?

There are 4 known substitutes for 5950-00-523-8388: 4820-00-288-6924, 3040-00-568-7942, 1630-00-612-0285 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SM-D-249239?

Key specifications for SM-D-249239: Coil Form Type: HOLLOW SINGLE COMPONENT; Features Provided: W/CAPACITOR AND W/RESISTOR; Reliability Indicator: NOT ESTABLISHED; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT. 22 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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