NSN 3020-01-085-2891 577R646H14, 01-085-2891, 010852891
Product Details | SPUR ANTIBACKLASH GEAR
3020-01-085-2891 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: 577R646H14, 3020-01-085-2891, 01-085-2891, 3020010852891, 010852891
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 05 NOV 1979 | 01-085-2891 | 26668 ( GEAR, ANTIBACKLASH, SPUR ) |
Drawings & Photos | NSN 3020-01-085-2891
Cross Reference | NSN 3020-01-085-2891
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 577R646H14 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN SYSTEMS |
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Related Products | NSN 3020-01-085-2891
Technical Data | NSN 3020-01-085-2891
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303 AND ALUMINUM ALLOY 2024 HUB |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CL 303 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-250/4 FED SPEC 2ND MATERIAL RESPONSE HUB |
| SURFACE TREATMENT | PASSIVATE HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 171,FINISH NO. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE HUB |
| TEETH QUANTITY | 130 |
| TOOTH FORM | STUB |
| PRESSURE ANGLE | 20.0000 DEGREES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 12 |
| STYLE DESIGNATOR | 2 PROTRUDING HUB |
| PITCH DIAMETER | 2.0630 INCHES NOMINAL |
| NOMINAL OVERALL LENGTH | 0.385 INCHES |
| NOMINAL OUTSIDE DIAMETER | 2.0312 INCHES |
| FACE NOMINAL WIDTH | 0.104 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.160 INCHES FIRST END |
| BORE STYLE | 1 PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.120 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | 2 SPLIT FIRST END |
| HUB NOMINAL DIAMETER | 0.188 INCHES FIRST END |
| CLAMPING SURFACE NOMINAL LENGTH | 0.188 INCHES FIRST END |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 2 PLAIN TRANSVERSELY THROUGH FACE |
| MOUNTING HOLE NOMINAL DIAMETER | 0.032 INCHES TRANSVERSELY THROUGH FACE |
| MANUFACTURERS CODE | 97942 |
| DESIGN CONTROL REFERENCE | 577R646H14 |
Restrictions/Controls & Freight Information | NSN 3020-01-085-2891
| 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: | A | Item does not contain precious metal |
| 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 | ||