PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MRD4A302Magneto,ignition

United Technologies Corp Electro Systems Inc · NSN 2920-00-242-9501 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-242-9501 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-242-9501. Primary manufacturer part number: MRD4A302.
Features
  • Magneto,ignition — FSC 2920
  • Rotation Element Type: PERMANENT MAGNET ROTOR
  • Mounting Facility Thread Quantity Per Inch: 16
  • Shaft Rotation Direction: CLOCKWISE
  • Mounting Facility Quantity: 2
  • Body Material: ALUMINUM ALLOY
  • Mounting Standard Controlling Agency: SAE
  • Mounting Method: FLANGE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Magneto,ignition, cataloged under National Stock Number 2920-00-242-9501, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2920-00-242-9501
Primary Part NumberMRD4A302
Item NameMagneto,ignition
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerUnited Technologies Corp Electro Systems Inc
StatusCANCELLED
Rotation Element TypePERMANENT MAGNET ROTOR
Mounting Facility Thread Quantity Per Inch16
Shaft Rotation DirectionCLOCKWISE
Mounting Facility Quantity2
Body MaterialALUMINUM ALLOY
Mounting Standard Controlling AgencySAE
Mounting MethodFLANGE
Distance Between Mounting Facility Centers4.182 INCHES MINIMUM AND 4.194 INCHES MAXIMUM IN
Impulse Quantity Per Revolution4
Mounting Slot Width0.403 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
Pole Quantity2
Ignition Type for Which DesignedSINGLE
Mounting Slot Length1.137 INCHES NOMINAL IN
Mounting FacilitySLOT AND THREADED HOLE(S)
Mounting Facility Thread Diameter0.375 INCHES NOMINAL IN
Performance TypeHIGH TENSION
Drive Connection TypeIMPULSE COUPLED
Contact Set Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2920-00-524-11321974157 INTERCHANGEABLE
End Bell,electrical Rotating Equ
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5950-00-645-39182508-4 INTERCHANGEABLE
Coil,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
4820-01-104-8891 INTERCHANGEABLE
Fitting,valve,ball
4030-01-716-432185246 INTERCHANGEABLE
Hook,release
Aerovironment, Inc.
Cross-Reference Index
Part NumberManufacturer
MJD4A302 United Technologies Corp Electro Systems Inc (USA)
H4302 Ambac International Corporation Div Ambac International (USA)
A85126-1 Dresser Industries Inc Leroi Div (USA)
85-246 Dresser Industries Inc Leroi Div (USA)
FE555E White Farm Equipment Co Sub of Tic Investment Inc (USA)
85-260 Dresser Industries Inc Leroi Div (USA)
MJC4C302 United Technologies Corp Electro Systems Inc (USA)
MJC4C302 Ambac International Corporation Div Ambac International (USA)
MRD4A302 PRIMARY United Technologies Corp Electro Systems Inc (USA)
10006462 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
A85-126-13C Dresser Industries Inc Leroi Div (USA)
MJD4B302 Ambac International Corporation Div Ambac International (USA)
H4302 United Technologies Corp Electro Systems Inc (USA)
MRD4A302 Ambac International Corporation Div Ambac International (USA)
MJD4A302 Ambac International Corporation Div Ambac International (USA)
10006462 Fairbanks Morse, Llc (USA)
A85-126 Dresser Industries Inc Leroi Div (USA)
MJD4B302 United Technologies Corp Electro Systems Inc (USA)
D4302 Ambac International Corporation Div Ambac International (USA)
Y91M406 Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc (USA)
Related Parts
2920-00-524-1132INTERCHANGEABLE
END BELL,ELECTRICAL ROTATING EQU
1974157
5950-00-645-3918INTERCHANGEABLE
COIL,RADIO FREQUENCY
2508-4
4820-01-104-8891INTERCHANGEABLE
FITTING,VALVE,BALL
4030-01-716-4321INTERCHANGEABLE
HOOK,RELEASE
85246

Frequently Asked Questions

What is NSN 2920-00-242-9501?

NSN 2920-00-242-9501 is a Magneto,ignition, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 2920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2920-00-242-9501?

NSN 2920-00-242-9501 has 21 cross-referenced part numbers: MJD4A302 (United Technologies Corp Electro Systems Inc), H4302 (Ambac International Corporation Div Ambac International), A85126-1 (Dresser Industries Inc Leroi Div), 85-246 (Dresser Industries Inc Leroi Div), FE555E (White Farm Equipment Co Sub of Tic Investment Inc) and 16 more.

What NSN replaces 2920-00-242-9501?

There are 4 known substitutes for 2920-00-242-9501: 2920-00-524-1132, 5950-00-645-3918, 4820-01-104-8891 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MRD4A302?

Key specifications for MRD4A302: Rotation Element Type: PERMANENT MAGNET ROTOR; Mounting Facility Thread Quantity Per Inch: 16; Shaft Rotation Direction: CLOCKWISE; Mounting Facility Quantity: 2. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2920-00-242-9501 still in active supply?

NSN 2920-00-242-9501 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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