Product Details | SPUR ANTIBACKLASH GEAR

3020-00-204-9504 An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

Part Alternates: 63351001, 63351-001, 633511, 63351-1, 3020-00-204-9504, 00-204-9504, 3020002049504, 002049504

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

Supply Group (FSG) NSN Assign. NIIN
30 13 APR 1973 00-204-9504

Drawings & Photos | NSN 3020-00-204-9504


Cross Reference | NSN 3020-00-204-9504

Part Number Cage Code Manufacturer
63351-001 01351 SOUTHERN GEAR & MACHINE, INC.
63351-001 0AHP5 CURTISS-WRIGHT CONTROLS, INC DIV FLIGHT SYSTEMS
63351-1 0AHP5 CURTISS-WRIGHT CONTROLS, INC DIV FLIGHT SYSTEMS

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Technical Data | NSN 3020-00-204-9504

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 FIRST GEAR STEEL COMP 303 HUB ALUMINUM ALLOY 2024 SECOND GEAR STEEL CORROSION RESISTING SPRING
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR
SURFACE TREATMENT ANODIZE FIRST GEAR PASSIVATE HUB ANODIZE SECOND GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE SECOND GEAR
TEETH QUANTITY 84
TOOTH FORM STANDARD
PRESSURE ANGLE 20.0000 DEGREES
PRECISION CLASSIFICATION QUALITY NUMBER 10
STYLE DESIGNATOR 2 PROTRUDING HUB
PITCH DIAMETER 1.3115 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM
NOMINAL OUTSIDE DIAMETER 1.343 INCHES
FACE NOMINAL WIDTH 0.125 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END 0.313 INCHES FIRST END
BORE STYLE 1 PLAIN BOTH ENDS
BORE NOMINAL DIAMETER 0.250 INCHES BOTH ENDS
HUB STYLE DESIGNATOR 2 SPLIT FIRST END
HUB NOMINAL DIAMETER 0.313 INCHES FIRST END
CLAMPING SURFACE NOMINAL LENGTH 0.250 INCHES FIRST END
ATTACHMENT METHOD CLAMP
SPECIAL FEATURES FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION
MANUFACTURERS CODE 01351
DESIGN CONTROL REFERENCE 63351-001

Restrictions/Controls & Freight Information | NSN 3020-00-204-9504

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 133300 MACHINERY/MACHINES NOI
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 593 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 3020-00-204-9504

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 CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each