NSN 3020-01-128-4681 42735, 42735P2, 01-128-4681
Product Details | HELICAL ANTIBACKLASH GEAR
3020-01-128-4681 An item having one fixed gear and one free gear, both having the same complement of helical 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: 42735, 42735P2, 3020-01-128-4681, 01-128-4681, 3020011284681, 011284681
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 21 MAR 1982 | 01-128-4681 | 26667 ( GEAR, ANTIBACKLASH, HELICAL ) |
Drawings & Photos | NSN 3020-01-128-4681
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Technical Data | NSN 3020-01-128-4681
| Characteristic | Specifications |
|---|---|
| MATERIAL | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| TEETH QUANTITY | 15 |
| TEETH TYPE | SINGLE HELIX |
| TOOTH FORM | STANDARD |
| TOOTH DIRECTION | LEFT |
| PRESSURE ANGLE | 20.0000 DEGREES |
| HELIX ANGLE | 9.0000 DEGREES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 6 OR QUALITY NUMBER 7 |
| STYLE DESIGNATOR | 4 PROTRUDING HUBS |
| PITCH DIAMETER | 0.4746 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 0.523 INCHES |
| FACE NOMINAL WIDTH | 0.405 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.015 INCHES BOTH ENDS |
| BORE STYLE | 14 W/COUNTERBORE BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.220 INCHES BOTH ENDS |
| COUNTERBORE NOMINAL DEPTH | 0.015 INCHES BOTH ENDS |
| COUNTERBORE NOMINAL DIAMETER | 0.220 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | 1 PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 0.365 INCHES BOTH ENDS |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 2 PLAIN AXIALLY THROUGH HUB, FIRST END |
| MOUNTING HOLE NOMINAL DIAMETER | 0.045 INCHES AXIALLY THROUGH HUB, FIRST END |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 0.290 INCHES AXIALLY THROUGH HUB, FIRST END |
Restrictions/Controls & Freight Information | NSN 3020-01-128-4681
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| 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. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| 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 |
|---|---|---|
| NMF Description | 133300 | MACHINERY/MACHINES NOI |
| Less than car load rating | ||
| Less than truck load rating | W | Rating Variable |
| Water commodity Code | 593 | unknown |
| Originating Activity Code | AX | Defense Supply Center Columbus Columbus, OH 43216-5000 |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | V | Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above. |
| 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 |
Management | NSN 3020-01-128-4681
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9B | Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | SMS | Defense Logistics Agency Enterprise Business Systems |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Acquisition Advice Codes | J | NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |