NSN 3020-00-937-6451 181917, 181-917, 00-937-6451
Product Details | SPUR ANTIBACKLASH GEAR
3020-00-937-6451 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: 181917, 181-917, 3020-00-937-6451, 00-937-6451, 3020009376451, 009376451
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 18 JAN 1967 | 00-937-6451 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-00-937-6451
Cross Reference | NSN 3020-00-937-6451
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 181-917 | 90073 | CMC ELECTRONICS INC |
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Related Products | NSN 3020-00-937-6451
Technical Data | NSN 3020-00-937-6451
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEETH QUANTITY | 46 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 20.0000 DEGREES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 10 |
| STYLE DESIGNATOR | 4 PROTRUDING HUBS |
| PITCH DIAMETER | 0.4791 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 0.497 INCHES |
| FACE NOMINAL WIDTH | 0.092 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.202 INCHES FIRST END 0.125 INCHES SECOND END |
| BORE STYLE | 1 PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.156 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | 4A 1 STEP FIRST END 5 PINNED SECOND END |
| HUB NOMINAL DIAMETER | 0.312 INCHES SECOND END |
| END NOMINAL LENGTH | 0.184 INCHES FIRST END |
| END NOMINAL DIAMETER | 0.187 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.160 INCHES FIRST END |
| FIRST STEP NOMINAL DIAMETER | 0.250 INCHES FIRST END |
| MANUFACTURERS CODE | 90073 |
| DESIGN CONTROL REFERENCE | 181-917 |
Restrictions/Controls & Freight Information | NSN 3020-00-937-6451
| 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 |
|---|---|---|
| No Freight Information | ||