The Sprocket Wheel, cataloged under National Stock Number 3020-01-397-5279, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-397-5279 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Length | 1.625 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Outside Diameter | 5.430 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Bore Type | STRAIGHT |
| Counterbore Depth | 0.375 INCHES NOMINAL IN |
| Teeth Row Quantity | 1 |
| Counterbore Location | AA END |
| Protruding Hub Characteristic | PLAIN |
| Bore Diameter | 1.010 INCHES NOMINAL IN |
| Furnished Items | COUNTERBORE |
| Face Width | 0.459 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8955976 | D/9 Drawing number reference only U.S. Government activity |
| 8955976-50 | 3/9 Design control — primary reference U.S. Government activity |
| 8955976 FIND NO.4 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-397-5279 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2520-01-397-5280, 4920-01-420-0902. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-397-5279: Bore Length: 1.625 INCHES NOMINAL IN; Design Form: PLAIN; Outside Diameter: 5.430 INCHES NOMINAL IN; Style Designator: PLAIN. 12 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.