PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

MA12N550Generator,engine Accessory

General Dynamics Mission Systems, Inc. Dba Gdms · NSN 2920-00-071-2345 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-071-2345 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-071-2345. Primary manufacturer part number: MA12N550.
Features
  • Generator,engine Accessory — FSC 2920
  • Distance Between Shaft Center and Bottom Mounting Hole Center: 3.280 INCHES NOMINAL IN
  • Rectifier Location: INTEGRAL
  • Angular Deviation of Third Hole From Second Hole in Deg: 150.0
  • Mounting Hole Thread Quantity Per Inch: 18
  • Shaft Drive End Style: STRAIGHT SHAFT END, THREADED, W/KEYWAY
  • Angular Deviation of Fourth Hole From Third Hole in Deg: 150.0
  • Distance Between Shaft Center and Top Mounting Hole Center: 3.240 INCHES NOMINAL IN
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Generator,engine Accessory, cataloged under National Stock Number 2920-00-071-2345, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is General Dynamics Mission Systems, Inc. Dba Gdms. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2920-00-071-2345
Primary Part NumberMA12N550
Item NameGenerator,engine Accessory
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc. Dba Gdms
StatusCANCELLED
Distance Between Shaft Center and Bottom Mounting Hole Center3.280 INCHES NOMINAL IN
Rectifier LocationINTEGRAL
Angular Deviation of Third Hole From Second Hole in Deg150.0
Mounting Hole Thread Quantity Per Inch18
Shaft Drive End StyleSTRAIGHT SHAFT END, THREADED, W/KEYWAY
Angular Deviation of Fourth Hole From Third Hole in Deg150.0
Distance Between Shaft Center and Top Mounting Hole Center3.240 INCHES NOMINAL IN
Angular Deviation of First Hole From Top Center in Deg0.0
SubmersibilityNONSUBMERSIBLE
Mounting Hole Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Voltage in Volts12.0
Ground Polarity TypeNEGATIVE
Angular Deviation of Second Hole From First Hole in Deg30.0
Bottom Mounting Hole Diameter0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Mounting Hole Thread Diameter0.312 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5935-00-417-778447400 INTERCHANGEABLE
Adapter,connector
Amphenol Corporation Div Amphenol Rf
5360-00-526-984747400 INTERCHANGEABLE
Spring,helical,compression
Bae Systems Land & Armaments L.p.
5999-01-048-7002 INTERCHANGEABLE
Circuit Board Conne
5342-01-086-727347-400 INTERCHANGEABLE
Anode,corrosion Preventive
Rix Industries
1740-01-575-566247400 INTERCHANGEABLE
Tractor,wheeled,aircraft Towing
Tld Wollard Llc
Cross-Reference Index
Part NumberManufacturer
MA12N550 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
MA12N550 Motorola Inc. Dba Integrated Information Systems Group (USA)
MA12N550 PRIMARY General Dynamics Mission Systems, Inc. Dba Gdms (USA)
MA12N550 Motorola Automotive Electronics (USA)
47400 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
Related Parts
5935-00-417-7784INTERCHANGEABLE
ADAPTER,CONNECTOR
47400
5360-00-526-9847INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
47400
5999-01-048-7002INTERCHANGEABLE
CIRCUIT BOARD CONNE
5342-01-086-7273INTERCHANGEABLE
ANODE,CORROSION PREVENTIVE
47-400
1740-01-575-5662INTERCHANGEABLE
TRACTOR,WHEELED,AIRCRAFT TOWING
47400

Frequently Asked Questions

What is NSN 2920-00-071-2345?

NSN 2920-00-071-2345 is a Generator,engine Accessory, manufactured by General Dynamics Mission Systems, Inc. Dba Gdms, classified under FSC 2920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2920-00-071-2345?

NSN 2920-00-071-2345 has 5 cross-referenced part numbers: MA12N550 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), MA12N550 (Motorola Inc. Dba Integrated Information Systems Group), MA12N550 (General Dynamics Mission Systems, Inc. Dba Gdms), MA12N550 (Motorola Automotive Electronics), 47400 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).

What NSN replaces 2920-00-071-2345?

There are 5 known substitutes for 2920-00-071-2345: 5935-00-417-7784, 5360-00-526-9847, 5999-01-048-7002 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MA12N550?

Key specifications for MA12N550: Distance Between Shaft Center and Bottom Mounting Hole Center: 3.280 INCHES NOMINAL IN; Rectifier Location: INTEGRAL; Angular Deviation of Third Hole From Second Hole in Deg: 150.0; Mounting Hole Thread Quantity Per Inch: 18. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2920-00-071-2345 still in active supply?

NSN 2920-00-071-2345 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.
PartsTable Design LLC · partstable.com