The Gear,spur, cataloged under National Stock Number 3020-01-174-1658, 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 General Electric Company. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-174-1658 |
| Primary Part Number | 9278M47P01 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.950 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.182 INCHES BOTH ENDS IN |
| Teeth Quantity | 47 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.450 INCHES FIRST END IN |
| Hardness Rating | 75.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 80.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM OVERALL |
| Nominal Overall Length | 2.865 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 4.7000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.950 INCHES IN |
| Surface Treatment | OXIDE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.680 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 9278M47P01 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 9278M47P01 | 5/2 Secondary reference U.S. Government activity |
| 9278M47P01 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-174-1658 is a Gear,spur, manufactured by General Electric Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-174-1658 has 1 manufacturer part number on file: 9278M47P01 (General Electric Company).
Key specifications for 9278M47P01: Bore Nominal Diameter: 0.950 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.182 INCHES BOTH ENDS IN; Teeth Quantity: 47; Body Style: PLAIN, WITH LIGHTENING HOLES. 17 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.
NSN 3020-01-174-1658 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.