NSN 3020-00-020-3920 3306691, 3306-691, 00-020-3920
Product Details | SPUR ANTIBACKLASH GEAR
3020-00-020-3920 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: 3306691, 3306-691, 3020-00-020-3920, 00-020-3920, 3020000203920, 000203920
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 01 JAN 1963 | 00-020-3920 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-00-020-3920
Cross Reference | NSN 3020-00-020-3920
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 3306-691 | 90073 | CMC ELECTRONICS INC |
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Related Products | NSN 3020-00-020-3920
Technical Data | NSN 3020-00-020-3920
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303 HUB STEEL TEETH |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TY 303,COND A CANCELLED FED SPEC 1ST MATERIAL RESPONSE HUB QQ-S-766,CL 302,COND A FED SPEC 2ND MATERIAL RESPONSE TEETH |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEETH QUANTITY | 60 |
| PRESSURE ANGLE | 14.5000 DEGREES |
| STYLE DESIGNATOR | 4 PROTRUDING HUBS |
| PITCH DIAMETER | 1.2500 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 1.2920 INCHES |
| FACE NOMINAL WIDTH | 0.062 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.185 INCHES FIRST END 0.063 INCHES SECOND END |
| BORE STYLE | 1 PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.0908 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | 1 PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END 0.185 INCHES SECOND END |
| MANUFACTURERS CODE | 90073 |
| DESIGN CONTROL REFERENCE | 3306-691 |
Restrictions/Controls & Freight Information | NSN 3020-00-020-3920
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| 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. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| 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 | ||
| 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 | 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 |