NSN 3020-00-020-3905 3318508, 3318-508, 00-020-3905
Product Details | SPUR ANTIBACKLASH GEAR
3020-00-020-3905 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: 3318508, 3318-508, 3020-00-020-3905, 00-020-3905, 3020000203905, 000203905
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 01 JAN 1963 | 00-020-3905 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-00-020-3905
Cross Reference | NSN 3020-00-020-3905
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 3318-508 | 90073 | CMC ELECTRONICS INC |
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Technical Data | NSN 3020-00-020-3905
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 304 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766 COND A FIN 28 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CMC197-117,CANADIAN MARCONI CO MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| TEETH QUANTITY | 60 |
| PRESSURE ANGLE | 14.5000 DEGREES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| BACKLASH DESIGNATION | GRADE A |
| STYLE DESIGNATOR | 2 PROTRUDING HUB |
| PITCH DIAMETER | 1.2500 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 1.292 INCHES |
| FACE NOMINAL WIDTH | 0.063 INCHES |
| BORE STYLE | 1 PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | 5 PINNED FIRST END |
| MANUFACTURERS CODE | 90073 |
| DESIGN CONTROL REFERENCE | 3318-508 |
Restrictions/Controls & Freight Information | NSN 3020-00-020-3905
| 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 | ||
| 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 |