NSN 3020-00-920-2984 18086691, 1808669-1, 00-920-2984
Product Details | SPUR ANTIBACKLASH GEAR
3020-00-920-2984 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: 18086691, 1808669-1, 3020-00-920-2984, 00-920-2984, 3020009202984, 009202984
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 01 JAN 1960 | 00-920-2984 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-00-920-2984
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Related Products | NSN 3020-00-920-2984
Technical Data | NSN 3020-00-920-2984
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 416 HUB ALUMINUM ALLOY 2024 TEETH |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE HUB QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE TEETH |
| SURFACE TREATMENT | ANODIZE TEETH |
| TEETH QUANTITY | 60 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | 38 PERIPHERAL FACE, HUBLESS |
| PITCH DIAMETER | 0.7500 INCHES NOMINAL |
| NOMINAL OVERALL LENGTH | 0.250 INCHES |
| NOMINAL OUTSIDE DIAMETER | 0.776 INCHES |
| FACE NOMINAL WIDTH | 0.094 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.011 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 | 0.220 INCHES SECOND END |
| ATTACHMENT METHOD | CLAMP |
| MANUFACTURERS CODE | 55972 |
| DESIGN CONTROL REFERENCE | 1808669-1 |
Restrictions/Controls & Freight Information | NSN 3020-00-920-2984
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Precious Metals Indicator Code: | U | Precious 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 | 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 | 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 | Z | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |