Product Details | SPUR ANTIBACKLASH GEAR

3020-00-057-2181 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: 2075912108, 2075912-108, 3020-00-057-2181, 00-057-2181, 3020000572181, 000572181

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

Supply Group (FSG) NSN Assign. NIIN
30 01 JUN 1967 00-057-2181

Drawings & Photos | NSN 3020-00-057-2181


Cross Reference | NSN 3020-00-057-2181

Part Number Cage Code Manufacturer
2075912-108 10001 NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT

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Technical Data | NSN 3020-00-057-2181

Characteristic Specifications
MATERIAL STEEL COMP 416 BODY
MATERIAL DOCUMENT AND CLASSIFICATION AISI 416/SAE 51416 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-STD-171,FINISH NO. 5.4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
TEETH QUANTITY 108
TOOTH FORM STANDARD
PRESSURE ANGLE 20.0000 DEGREES
PRECISION CLASSIFICATION QUALITY NUMBER 12
STYLE DESIGNATOR 2 PROTRUDING HUB
PITCH DIAMETER 1.1250 INCHES NOMINAL
FACE NOMINAL WIDTH 0.125 INCHES
BORE NOMINAL DIAMETER 0.187 INCHES BOTH ENDS
ATTACHMENT METHOD CLAMP
MANUFACTURERS CODE 10001
DESIGN CONTROL REFERENCE 2075912-108

Restrictions/Controls & Freight Information | NSN 3020-00-057-2181

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 197339 WHEELS COG/GEAR/PINION I/S
Less than car load rating S 60
Less than truck load rating R 65.0
Water commodity Code 593 unknown
Originating Activity Code HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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 3020-00-057-2181

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 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