Product Details | SPUR ANTIBACKLASH GEAR

3020-00-542-4954 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: 9010900, 3020-00-542-4954, 00-542-4954, 3020005424954, 005424954

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

Supply Group (FSG) NSN Assign. NIIN
30 01 JAN 1963 00-542-4954

Drawings & Photos | NSN 3020-00-542-4954


Cross Reference | NSN 3020-00-542-4954

Part Number Cage Code Manufacturer
9010900 18876 U S ARMY AVIATION AND MISSILE COMMAND

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Technical Data | NSN 3020-00-542-4954

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/4,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT ANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
TEETH QUANTITY 90
TOOTH FORM STANDARD
PRESSURE ANGLE 14.5000 DEGREES
PRECISION CLASSIFICATION QUALITY NUMBER 8 OR QUALITY NUMBER 12
BACKLASH DESIGNATION GRADE C
STYLE DESIGNATOR 2 PROTRUDING HUB
PITCH DIAMETER 1.8750 INCHES NOMINAL
NOMINAL OVERALL LENGTH 0.406 INCHES
NOMINAL OUTSIDE DIAMETER 1.914 INCHES
FACE NOMINAL WIDTH 0.187 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END 0.219 INCHES FIRST END
BORE STYLE 1 PLAIN FIRST END
BORE NOMINAL DIAMETER 0.563 INCHES FIRST END
HUB STYLE DESIGNATOR 1 PLAIN FIRST END
HUB NOMINAL DIAMETER 0.933 INCHES FIRST END
SPECIAL FEATURES COUNTERBORE SECOND END,0.703 IN. DIA; 0.188 IN. DEEP
MANUFACTURERS CODE 18876
DESIGN CONTROL REFERENCE 9010900

Restrictions/Controls & Freight Information | NSN 3020-00-542-4954

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 XX
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