Product Details | GROOVE PULLEY

3020-00-528-0497 A pulley with one or more grooved faces or rims of the same diameter. For pulleys encased in a shell or frame, see BLOCK, TACKLE. For items specifically designed for aviation, see PULLEY(1), GROOVE, AVIATION.

Part Alternates: BB128, SP35, 3020-00-528-0497, 00-528-0497, 3020005280497, 005280497

Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain

Supply Group (FSG) NSN Assign. NIIN
30 01 JAN 1963 00-528-0497

Drawings & Photos | NSN 3020-00-528-0497


Demand History | NSN 3020-00-528-0497

Part Number Request Date QTY Origin
BB128 2025-04-99 5 US

Cross Reference | NSN 3020-00-528-0497

Part Number Cage Code Manufacturer
BB128 82402 TRIUMPH GEAR SYSTEMS, INC. DBA TRIUMPH GEAR SYSTEMS- PARK CITY
SP35 83451 ATCO PULLEY CORP

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Technical Data | NSN 3020-00-528-0497

Characteristic Specifications
STYLE DESIGNATOR A3 PLAIN
OUTSIDE DIAMETER 2.500 INCHES NOMINAL
OVERALL LENGTH 0.479 INCHES MINIMUM AND 0.484 INCHES MAXIMUM
FACE WIDTH 0.433 INCHES MINIMUM AND 0.442 INCHES MAXIMUM
HUB END OUTSIDE DIAMETER AND LOCATION 0.375 INCHES NOMINAL BOTH ENDS
DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION 0.021 INCHES MINIMUM BOTH ENDS AND 0.023 INCHES MAXIMUM BOTH ENDS
DESIGN FORM PLAIN
LIGHTENING HOLE NOT INCLUDED
INTEGRAL COOLING VANE NOT INCLUDED
MATERIAL AND LOCATION FORMICA,OVERALL
GROOVE SHAPE U
GROOVE QUANTITY 1
GROOVE DEPTH 0.3125 INCHES NOMINAL
GROOVE WIDTH 0.218 INCHES MINIMUM AND 0.224 INCHES MAXIMUM
GROOVE RADIUS 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM
BORE FEATURE INCLUDED
BEARINGS INCLUDED
BEARING TYPE BALL
BEARING QUANTITY 1
BORE TYPE STRAIGHT
BORE DIAMETER 0.250 INCHES NOMINAL
BORE LENGTH 0.479 INCHES MINIMUM AND 0.484 INCHES MAXIMUM
COUNTERBORE FEATURE NOT INCLUDED
KEYING FACILITY NOT INCLUDED
SPLIT HUB FEATURE NOT INCLUDED

Restrictions/Controls & Freight Information | NSN 3020-00-528-0497

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 127300 PULLEY BLOCKS/TCKLE/SNATCH/FAIRLDRS
Less than car load rating S 60
Less than truck load rating S 60.0
Water commodity Code 593 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 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 3020-00-528-0497

Category Code Description
Cognizance Codes9CNavy-owned stocks of defense construction material
Naval Inventory Control Point, Mechanicsburg
Source of SupplyS9CDefense Supply Center Columbus
Columbus, OH 43215
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