Product Details | ENGINE ACCESSORY GENERATOR

2920-00-905-0431 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: YB-68, YB68, 2920-00-905-0431, 00-905-0431, 2920009050431, 009050431

Engine Accessories | Engine Electrical System Components, Nonaircraft

Supply Group (FSG) NSN Assign. NIIN
29 24 JUN 1966 00-905-0431

Drawings & Photos | NSN 2920-00-905-0431


Cross Reference | NSN 2920-00-905-0431

Part Number Cage Code Manufacturer
YB-68 66289 WISCONSIN MOTORS LLC

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Technical Data | NSN 2920-00-905-0431

Characteristic Specifications
VOLTAGE IN VOLTS 24.0
MAXIMUM OUTPUT CURRENT RATING IN AMPS 10.0
MAXIMUM RATED ARMATURE SPEED IN RPM 6000
ARMATURE MINIMUM SPEED IN RPM AT FULL CURRENT OUTPUT 1950
MINIMUM CURRENT CUT-IN SPEED IN RPM 1400
GROUNDING METHOD EXTERNAL
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 3.060 INCHES NOMINAL
DISTANCE BETWEEN SHAFT CENTER AND TOP MOUNTING HOLE CENTER 3.060 INCHES NOMINAL
DISTANCE BETWEEN INSIDE SURFACES OF HINGE BRACKET 6.118 INCHES MINIMUM AND 6.131 INCHES MAXIMUM
DISTANCE BETWEEN OUTSIDE SURFACES OF HINGE BRACKET 6.998 INCHES MINIMUM AND 7.011 INCHES MAXIMUM
BOTTOM MOUNTING HOLE DIAMETER 0.379 INCHES MINIMUM AND 0.387 INCHES MAXIMUM
ANGULAR DEVIATION OF FIRST HOLE FROM TOP CENTER IN DEG 180.0
ANGULAR DEVIATION OF SECOND HOLE FROM FIRST HOLE IN DEG 164.0
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 0.370 INCHES NOMINAL
SECOND STEP DIAMETER 0.6684 INCHES MINIMUM AND 0.669 INCHES MAXIMUM
KEYWAY WIDTH 0.125 INCHES NOMINAL
UNTHREADED PORTION LENGTH 0.710 INCHES NOMINAL
KEYWAY LENGTH 0.625 INCHES NOMINAL
DISTANCE FROM END TO KEYWAY CENTER 0.750 INCHES NOMINAL
THREAD SERIES UNS
THREAD DIAMETER 0.669 INCHES NOMINAL
THREAD QUANTITY PER INCH 20
THREAD PITCH DIAMETERS 0.6324 TO 0.6365 INCHES
THREAD DIRECTION RIGHT-HAND
SUBMERSIBILITY NONSUBMERSIBLE
MAXIMUM OPERATING ALTITUDE RATING NOT RATED
FURNISHED ITEMS WOODRUFF KEY
III FSC APPLICATION DATA ENGINE ELECTRICAL SYSTEM,NONAIRCRAFT
MANUFACTURERS CODE 66289
DESIGN CONTROL REFERENCE YB-68

Restrictions/Controls & Freight Information | NSN 2920-00-905-0431

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 AX Defense Supply Center Columbus
Columbus, OH 43216-5000
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
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 2920-00-905-0431

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 CodesYTERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each