NSN 3020-00-870-3787 2107858, 00-870-3787, 008703787
Product Details | SPUR ANTIBACKLASH GEAR
3020-00-870-3787 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: 2107858, 3020-00-870-3787, 00-870-3787, 3020008703787, 008703787
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 04 DEC 1967 | 00-870-3787 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-00-870-3787
Cross Reference | NSN 3020-00-870-3787
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 2107858 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Technical Data | NSN 3020-00-870-3787
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| TEETH QUANTITY | 128 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 20.0000 DEGREES |
| BACKLASH DESIGNATION | GRADE C |
| STYLE DESIGNATOR | 2 PROTRUDING HUB |
| PITCH DIAMETER | 2.0000 INCHES NOMINAL |
| NOMINAL OVERALL LENGTH | 0.375 INCHES |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MANUFACTURERS CODE | 18876 |
| DESIGN CONTROL REFERENCE | 2107858 |
Restrictions/Controls & Freight Information | NSN 3020-00-870-3787
| 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 | BD | U.S. Army Aviation and Missile Command Redstone Arsenal, AL 35898-5230 |
| 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 |