Product Details | ENGINE ACCESSORY GENERATOR

2920-00-640-7872 A generator primarily designed to be mounted on an internal combustion engine, and to be driven by the engine to keep the battery in a charged condition. May also supply current for the engine ignition system and/or electrical equipment which is connected to the battery circuit. Includes alternating current generators designed for use with a rectifier. Excludes the major generator of "GENERATING SETS". For generators specifically designed for aircraft use and not mounted on the engine, see GENERATOR, DIRECT CURRENT.20229200048Engine Electrical System Components, Nonaircraft29250058Engine Electrical System Components, Aircraft Prime Moving

Part Alternates: 1401004, 2920-00-640-7872, 00-640-7872, 2920006407872, 006407872

Engine Accessories | Engine Electrical System Components, Nonaircraft

Supply Group (FSG) NSN Assign. NIIN
29 01 JAN 1963 00-640-7872

Drawings & Photos | NSN 2920-00-640-7872


Demand History | NSN 2920-00-640-7872

Part Number Request Date QTY Origin
1401004 2012-11-30 3 US
1401004 2007-11-13 1 DE
1401004 2007-08-06 2 US

Cross Reference | NSN 2920-00-640-7872

Part Number Cage Code Manufacturer
1401004 12204 DAIMLER CHRYSLER

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Technical Data | NSN 2920-00-640-7872

Characteristic Specifications
VOLTAGE IN VOLTS 6.0
MAXIMUM OUTPUT CURRENT RATING IN AMPS 45.0
MAXIMUM RATED ARMATURE SPEED IN RPM 8000
ARMATURE MINIMUM SPEED IN RPM AT FULL CURRENT OUTPUT 1800
MINIMUM CURRENT CUT-IN SPEED IN RPM 1000
GROUNDING METHOD INTERNAL
SHAFT ROTATION DIRECTION CLOCKWISE
MOUNTING STYLE 15 BRACKET MTD W/THREE MTG HOLES, TOP HOLE THREADED
DISTANCE BETWEEN SHAFT CENTER AND BOTTOM MOUNTING HOLE CENTER 3.375 INCHES NOMINAL
DISTANCE BETWEEN SHAFT CENTER AND TOP MOUNTING HOLE CENTER 3.188 INCHES NOMINAL
DISTANCE BETWEEN INSIDE SURFACES OF HINGE BRACKET 6.680 INCHES MINIMUM AND 6.694 INCHES MAXIMUM
DISTANCE BETWEEN OUTSIDE SURFACES OF HINGE BRACKET 7.398 INCHES MINIMUM AND 7.412 INCHES MAXIMUM
BOTTOM MOUNTING HOLE DIAMETER 0.328 INCHES NOMINAL
ANGULAR DEVIATION OF FIRST HOLE FROM TOP CENTER IN DEG 17.0
ANGULAR DEVIATION OF SECOND HOLE FROM FIRST HOLE IN DEG 163.0
MOUNTING HOLE THREAD SERIES DESIGNATOR UNC
MOUNTING HOLE THREAD DIAMETER 0.312 INCHES NOMINAL
MOUNTING HOLE THREAD QUANTITY PER INCH 18
MOUNTING HOLE THREAD CLASS 2B
MOUNTING HOLE THREAD DIRECTION RIGHT-HAND
SHAFT DRIVE END STYLE 1 STRAIGHT SHAFT END, THREADED, W/KEYWAY
THREAD LENGTH 0.438 INCHES NOMINAL
SECOND STEP DIAMETER 0.669 INCHES NOMINAL
KEYWAY WIDTH 0.125 INCHES NOMINAL
UNTHREADED PORTION LENGTH 0.781 INCHES NOMINAL
KEYWAY LENGTH 0.625 INCHES NOMINAL
DISTANCE FROM END TO KEYWAY CENTER 0.781 INCHES NOMINAL
THREAD SERIES UNS
THREAD DIAMETER 0.669 INCHES NOMINAL
THREAD QUANTITY PER INCH 20
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
SUBMERSIBILITY NONSUBMERSIBLE
ENVIRONMENTAL PROTECTION FUNGUS RESISTANT
FURNISHED ITEMS COOLING FAN AND DRIVE PULLEY AND RADIO INTERFERENCE SHIELDING

Restrictions/Controls & Freight Information | NSN 2920-00-640-7872

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 062120 GENERATORS/MOTORS/PARTS NOI
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 590 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity H Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 2920-00-640-7872

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each