The Gear,helical, cataloged under National Stock Number 3020-00-517-3922, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-517-3922 |
| Primary Part Number | 3708 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Div Marine Systems |
| Status | ACTIVE |
| Pitch Diameter | 29.3000 INCHES NOMINAL IN |
| Nominal Outside Diameter | 29.4670 INCHES IN |
| Tooth Direction | RIGHT |
| Tooth Form | STANDARD |
| Hub Nominal Diameter | 5.500 INCHES SECOND END IN |
| Keyway Nominal Width | 0.625 INCHES BOTH ENDS IN |
| Teeth Type | SINGLE HELIX |
| Teeth Quantity | 293 |
| Material | STEEL OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Style Designator | ONE PROTRUDING HUB, ONE RECESSED HUB |
| Helix Angle | 10.0000 DEGREES |
| Hub Nominal Diameter | 5.500 INCHES FIRST END IN |
| Face Nominal Width | 3.312 INCHES IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Material Document and Classification | MIL-S-890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bore Style | TAPERED W/KEYWAY SECOND END |
| Nominal Overall Length | 4.750 INCHES IN |
| Body Style | WEBBED, SOLID |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3708 | Westinghouse Electric Corp Sturtevant Div (USA) |
| 3708 PRIMARY | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| D15-508BPC55 | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| D15-508BPC55 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-508DPC55 | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| D15-508IPC55 | Westinghouse Electric Corp (USA) |
| DD445S4901-60PC55 | Naval Ship Systems Command (USA) |
| 3708 | Westinghouse Electric Corp (USA) |
| DD445S4901-67PC5 | Naval Ship Systems Command (USA) |
| D15-508IPC55 | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| D15-508IPC55 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-508DPC55 | Westinghouse Electric Corp (USA) |
| D15-508BPC55 | Westinghouse Electric Corp (USA) |
| D15-508DPC55 | Westinghouse Electric Corp Sturtevant Div (USA) |
| DD445S4901-62PC55 | Naval Ship Systems Command (USA) |
NSN 3020-00-517-3922 is a Gear,helical, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-517-3922 has 15 cross-referenced part numbers: 3708 (Westinghouse Electric Corp Sturtevant Div), 3708 (Northrop Grumman Systems Corporation Div Marine Systems), D15-508BPC55 (Northrop Grumman Systems Corporation Div Marine Systems), D15-508BPC55 (Westinghouse Electric Corp Sturtevant Div), D15-508DPC55 (Northrop Grumman Systems Corporation Div Marine Systems) and 10 more.
There are 12 known substitutes for 3020-00-517-3922: 5330-00-097-6511, 5975-00-194-9512, 4330-00-706-3598 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3708: Pitch Diameter: 29.3000 INCHES NOMINAL IN; Nominal Outside Diameter: 29.4670 INCHES IN; Tooth Direction: RIGHT; Tooth Form: STANDARD. 19 total characteristics are documented in the Federal Logistics Information System.