NSN 3020-00-477-1804 MAB250601875, MAB250-60-1875, 201782
Product Details | SPUR ANTIBACKLASH GEAR
3020-00-477-1804 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: MAB250601875, MAB250-60-1875, 201782, 20178-2, 3020-00-477-1804, 00-477-1804, 3020004771804, 004771804
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 14 JUN 1971 | 00-477-1804 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-00-477-1804
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Related Products | NSN 3020-00-477-1804
Technical Data | NSN 3020-00-477-1804
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY BODY STEEL HUB |
| SURFACE TREATMENT | ANODIZE BODY PASSIVATE HUB |
| TEETH QUANTITY | 60 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 20.0000 DEGREES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| STYLE DESIGNATOR | 2 PROTRUDING HUB |
| PITCH DIAMETER | 0.9375 INCHES NOMINAL |
| NOMINAL OVERALL LENGTH | 0.375 INCHES |
| NOMINAL OUTSIDE DIAMETER | 0.9688 INCHES |
| FACE NOMINAL WIDTH | 0.125 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END |
| BORE STYLE | 1 PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.187 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | 5 PINNED FIRST END |
| HUB NOMINAL DIAMETER | 0.375 INCHES FIRST END |
| ATTACHMENT METHOD | MOUNTING HOLE |
| SPECIAL FEATURES | TWO THREADED MTG HOLES LOCATED HUB BETWEEN HUB END AND GEAR FACE 90 DEG APART; UNC THD SERIES; MTG HOLE NOM THD SIZE 0.112 IN.; 40 THREADS PER IN. |
Restrictions/Controls & Freight Information | NSN 3020-00-477-1804
| 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 | ||