The Gear,helical, cataloged under National Stock Number 3020-00-239-5558, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-239-5558 |
| Primary Part Number | G5963PC102 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 0.2495 INCHES FIRST END IN |
| Bore Nominal Diameter | 1.188 INCHES FIRST END IN |
| Helix Angle | 44.3386 DEGREES |
| Hub Nominal Diameter | 1.938 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.938 INCHES SECOND END IN |
| Teeth Quantity | 91 |
| Body Style | WEBBED, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.563 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 160.0 BRINELL STANDARD MINIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.7686 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 6.8686 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.7187 INCHES FIRST END IN |
| Pressure Angle | 15.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| G5963PC102 | Siemens Energy, Inc. (USA) |
| G6702PC102 | Siemens Energy, Inc. (USA) |
| G6752PC102 | Siemens Energy, Inc. (USA) |
| G6654PC102 | Siemens Energy, Inc. (USA) |
| G6709PC102 | Siemens Energy, Inc. (USA) |
| G5957PC102 | Siemens Energy, Inc. (USA) |
| G6647PC102 | Siemens Energy, Inc. (USA) |
| G6683PC102 | Siemens Energy, Inc. (USA) |
| G6676PC102 | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| W429AS-2X2 | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
| W429AS2X2 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3020-00-239-5558 is a Gear,helical, manufactured by Siemens Energy, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-239-5558 has 9 manufacturer part numbers on file: G5963PC102 (Siemens Energy, Inc.), G6702PC102 (Siemens Energy, Inc.), G6752PC102 (Siemens Energy, Inc.), G6654PC102 (Siemens Energy, Inc.), G6709PC102 (Siemens Energy, Inc.) and 4 more.
Key specifications for G5963PC102: Keyway Nominal Width: 0.2495 INCHES FIRST END IN; Bore Nominal Diameter: 1.188 INCHES FIRST END IN; Helix Angle: 44.3386 DEGREES; Hub Nominal Diameter: 1.938 INCHES FIRST END IN. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.