Product Details | SPUR ANTIBACKLASH GEAR

3020-00-918-3812 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: 537-102-033, 3020-00-918-3812, 00-918-3812, 3020009183812, 537102033, 009183812

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

Supply Group (FSG) NSN Assign. NIIN
30 01 JAN 1960 00-918-3812

Drawings & Photos | NSN 3020-00-918-3812


Cross Reference | NSN 3020-00-918-3812

Part Number Cage Code Manufacturer
537-102-033 07421 INTERSTATE ELECTRONICS CORPORATION DBA L-3 INTERSTATE ELECTRONICS
537-102-033 2A994 ALLIED SCARSDALE GEAR CORP
537-102-033 66610 NORTH SHORE GEAR & TOOL CORP

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Technical Data | NSN 3020-00-918-3812

Characteristic Specifications
MATERIAL ALUMINUM ALLOY OVERALL
SURFACE TREATMENT ANODIZE OVERALL
TEETH QUANTITY 130
TOOTH FORM STANDARD
PRESSURE ANGLE 20.0000 DEGREES
PRECISION CLASSIFICATION QUALITY NUMBER 12
STYLE DESIGNATOR 2 PROTRUDING HUB
PITCH DIAMETER 1.8056 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER 1.833 INCHES
FACE NOMINAL WIDTH 0.104 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END 0.317 INCHES FIRST END
BORE STYLE 1 PLAIN BOTH ENDS
BORE NOMINAL DIAMETER 0.241 INCHES BOTH ENDS
HUB STYLE DESIGNATOR 2 SPLIT FIRST END
HUB NOMINAL DIAMETER 0.310 INCHES FIRST END
CLAMPING SURFACE NOMINAL LENGTH 0.251 INCHES FIRST END
MANUFACTURERS CODE 2A994
DESIGN CONTROL REFERENCE 537-102-033

Restrictions/Controls & Freight Information | NSN 3020-00-918-3812

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:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
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 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 3020-00-918-3812

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 CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each