NSN 3020-00-257-2174 7781521, 778-1521, 7781521001
Product Details | HELICAL GEAR
3020-00-257-2174 A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also GEAR, ANTIBACKLASH, HELICAL
Part Alternates: 7781521, 778-1521, 7781521001, 778-1521-001, 3020-00-257-2174, 00-257-2174, 3020002572174, 002572174
Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 30 | 18 JUN 1973 | 00-257-2174 | 05464 ( GEAR, HELICAL ) |
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Related Products | NSN 3020-00-257-2174
Technical Data | NSN 3020-00-257-2174
| Characteristic | Specifications |
|---|---|
| MATERIAL | COPPER ALLOY 360 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626,COMP 22,1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| TEETH QUANTITY | 32 |
| TEETH TYPE | SINGLE HELIX |
| TOOTH FORM | STANDARD |
| TOOTH DIRECTION | LEFT |
| PRESSURE ANGLE | 20.0000 DEGREES |
| HELIX ANGLE | 45.0000 DEGREES |
| STYLE DESIGNATOR | 2 PROTRUDING HUB |
| PITCH DIAMETER | 0.9428 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 0.9800 INCHES |
| FACE NOMINAL WIDTH | 0.094 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.219 INCHES FIRST END |
| BORE STYLE | 1 PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.252 INCHES FIRST END |
| HUB STYLE DESIGNATOR | 5 PINNED FIRST END |
| HUB NOMINAL DIAMETER | 0.4062 INCHES FIRST END |
| BODY STYLE | 1 PLAIN, SOLID |
| SPECIAL FEATURES | MTG HOLES 120 DEGS APART |
Restrictions/Controls & Freight Information | NSN 3020-00-257-2174
| 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: | 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 | 197337 | WHEELS COG/GEAR/PINION/SPROCK |
| 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 3020-00-257-2174
| Category | Code | Description |
|---|---|---|
| Stores Account Code | 1 | Marine Corps Stock Fund Account Item. |
| Combat Essentiality Code | 2 | Non-Critical Repair Part. Repair parts or major components whose failure in an end item will not render the end item inoperative or reduce its effectiveness below the minimum acceptable level of efficiency, and which do not fit the definition of Code 3 or 4 items. |
| Materiel Management Code | C | Construction MaterielDefense Supply Center Columbus (DSCC) |
| Echelon Management Code | 2 | ICP/DSSC Marine Corps-managed Recoverability Code D items and Defense Logistics Agency (DLA)/TACOM/GSA) items which the integrated manager has not decontrolled. |
| Source of Supply | S9C | Defense Supply Center Columbus Columbus, OH 43215 |
| Agency | DM | U.S. Marine Corps |
| Service Organization | M | U.S. Marine Corps |
| Reparability | Z | Nonreparable item. When unserviceable, condemn and dispose at the level indicated by the first digit of the maintenance code. |
| Acquisition Advice Codes | Y | TERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9C | Navy-owned stocks of defense construction material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | S9C | Defense Supply Center Columbus Columbus, OH 43215 |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Acquisition Advice Codes | Y | TERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |



