The Gear,spur, cataloged under National Stock Number 3020-00-294-4844, 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 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-294-4844 |
| Primary Part Number | 51C5508CHANGE2 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Keyway Nominal Width | 0.062 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.625 INCHES FIRST END IN |
| Teeth Quantity | 126 |
| Body Style | PLAIN, SOLID |
| Bore Style | TAPERED W/KEYWAY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.156 INCHES FIRST END IN |
| Nominal Overall Length | 0.281 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Taper Major Nominal Diameter | 0.189 INCHES FIRST END IN |
| Material Document and Classification | SAE 64 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.6230 INCHES MINIMUM AND 2.6250 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.666 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.128 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY 937 OVERALL |
| Face Nominal Width | 0.125 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 |
|---|---|
| 51C5508CHANGE2 PRIMARY | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 51C5508CHANGE2 | 5/9 Secondary reference Westinghouse Electric Corp Power Generation-Generator Div |
NSN 3020-00-294-4844 is a Gear,spur, manufactured by Westinghouse Electric Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-294-4844 has 1 manufacturer part number on file: 51C5508CHANGE2 (Westinghouse Electric Corp).
Key specifications for 51C5508CHANGE2: Keyway Nominal Width: 0.062 INCHES FIRST END IN; Hub Nominal Diameter: 0.625 INCHES FIRST END IN; Teeth Quantity: 126; Body Style: PLAIN, SOLID. 18 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.