Product Details | SPUR ANTIBACKLASH GEAR

3020-00-212-9028 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: AB250118CT250, AB250-118CT250, 3020-00-212-9028, 00-212-9028, 3020002129028, 002129028

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

Supply Group (FSG) NSN Assign. NIIN
30 25 APR 1973 00-212-9028

Drawings & Photos | NSN 3020-00-212-9028


Cross Reference | NSN 3020-00-212-9028

Part Number Cage Code Manufacturer
AB250-118CT250 01351 SOUTHERN GEAR & MACHINE, INC.

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Technical Data | NSN 3020-00-212-9028

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 BODY STEEL COMP 303 HUB
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY QQ-A-764 FED SPEC SINGLE MATERIAL RESPONSE HUB
SURFACE TREATMENT ANODIZE BODY PASSIVATE HUB
TEETH QUANTITY 118
TOOTH FORM STANDARD
PRESSURE ANGLE 20.0000 DEGREES
PRECISION CLASSIFICATION QUALITY NUMBER 10
STYLE DESIGNATOR 2 PROTRUDING HUB
PITCH DIAMETER 1.8437 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER 1.8750 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

Restrictions/Controls & Freight Information | NSN 3020-00-212-9028

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 062070 GEAR MOTORS/PARTS 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 3020-00-212-9028

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