Product Details | SPUR ANTIBACKLASH GEAR

3020-00-244-9320 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: 6808441, 680844-1, 6809181, 680918-1, 3020-00-244-9320, 00-244-9320, 3020002449320, 002449320

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

Supply Group (FSG) NSN Assign. NIIN
30 05 JAN 1972 00-244-9320

Drawings & Photos | NSN 3020-00-244-9320


Cross Reference | NSN 3020-00-244-9320

Part Number Cage Code Manufacturer
680844-1 66672 GUPTILL GEAR CORP
680918-1 06481 NORTHROP GRUMMAN SYSTEMS CORPORATION
680918-1 66672 GUPTILL GEAR CORP

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Technical Data | NSN 3020-00-244-9320

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 6061 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT ANODIZE OVERALL
TEETH QUANTITY 100
TOOTH FORM STANDARD
PRESSURE ANGLE 20.0000 DEGREES
PRECISION CLASSIFICATION QUALITY NUMBER 10
STYLE DESIGNATOR 4 PROTRUDING HUBS
PITCH DIAMETER 1.0407 INCHES MINIMUM AND 1.0417 INCHES MAXIMUM
NOMINAL OUTSIDE DIAMETER 1.0625 INCHES
FACE NOMINAL WIDTH 0.107 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END 0.140 INCHES FIRST END 0.064 INCHES SECOND END
BORE STYLE 1 PLAIN BOTH ENDS
BORE NOMINAL DIAMETER 0.120 INCHES BOTH ENDS
HUB STYLE DESIGNATOR 2 SPLIT FIRST END 1 PLAIN SECOND END
HUB NOMINAL DIAMETER 0.141 INCHES FIRST END 0.250 INCHES SECOND END
CLAMPING SURFACE NOMINAL LENGTH 0.140 INCHES FIRST END
ATTACHMENT METHOD CLAMP
MANUFACTURERS CODE 06481
DESIGN CONTROL REFERENCE 680918-1

Restrictions/Controls & Freight Information | NSN 3020-00-244-9320

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 KE Naval ICP
Philadelphia, PA 19111
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 3020-00-244-9320

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