The Gear,worm Wheel, cataloged under National Stock Number 3020-00-338-9573, 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 Westinghouse Electric Corp. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 27 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-338-9573 |
| Primary Part Number | W50DX57 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Teeth Quantity | 39 |
| Tooth Direction | RIGHT |
| Bore Style | W/ 2 KEYWAYS BOTH ENDS |
| Pitch Diameter | 17.4570 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 18.5000 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 2.5625 INCHES BOTH ENDS IN |
| Pressure Angle | 27.5000 DEGREES |
| Mating Thread Lead Quantity | 2 |
| Face Nominal Width | 2.250 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 |
|---|---|
| 94401PC78 | Rexnord Industries Llc (USA) |
| W50DX57 PRIMARY | Westinghouse Electric Corp (USA) |
| 94408PC78 | Rexnord Industries Llc (USA) |
| 1503365 PRIMARY | Westinghouse Electric Corp (USA) |
| 94402PC78 | Rexnord Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| G2281PC78 | 5/9 Secondary reference Siemens Energy, Inc. |
| DD381S41-0266PC78 | 3/2 Design control — primary reference U.S. Government activity |
| G6666PC78 | 5/9 Secondary reference Siemens Energy, Inc. |
| DD423S41-0237PC78 | 3/2 Design control — primary reference U.S. Government activity |
| D2-7370-9 | 5/9 Secondary reference Usm Corp Sub of Emhart Industries Inc Farrel Co Div |
| DD423S41-108PC78 | 3/2 Design control — primary reference U.S. Government activity |
| G2282PC78 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| DD423S41-101PC78 | 3/2 Design control — primary reference U.S. Government activity |
| G6672PC78 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| DD423S41-0244PC78 | 3/2 Design control — primary reference U.S. Government activity |
| 1503365 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| W50DX57 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W50DX57 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| G6665PC78 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| 1503365 | 5/2 Secondary reference U.S. Government activity |
| G6665PC78 | 5/9 Secondary reference Siemens Energy, Inc. |
| G2288PC78 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| G2282PC78 | 5/9 Secondary reference Siemens Energy, Inc. |
| G2281PC78 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W50DX57 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3020-00-338-9573 is a Gear,worm Wheel, manufactured by Westinghouse Electric Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-338-9573 has 5 manufacturer part numbers on file: 94401PC78 (Rexnord Industries Llc), W50DX57 (Westinghouse Electric Corp), 94408PC78 (Rexnord Industries Llc), 1503365 (Westinghouse Electric Corp), 94402PC78 (Rexnord Industries Llc).
Key specifications for W50DX57: Teeth Quantity: 39; Tooth Direction: RIGHT; Bore Style: W/ 2 KEYWAYS BOTH ENDS; Pitch Diameter: 17.4570 INCHES NOMINAL IN. 10 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.