The Sprocket Wheel, cataloged under National Stock Number 3020-00-640-2290, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-640-2290 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| FSC Application Data | HOSE AND REEL ASSEMBLY,CB,TRUCK,CRASH,FIRE AND RESCUE |
| Hub Outside Diameter | 1.750 INCHES NOMINAL AA END IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.875 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 2.240 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 14 |
| Hardness Rating Test Method | NOT RATED |
| Distance From Hub End to Flange End | 0.648 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 2 |
| Thread Size | 3/8-16 |
| Hole Location | ONE LOCATED ON TOP OF HUB 90 DEG APART |
| Bore Diameter | 1.000 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Material | STEEL |
| Face Width | 0.217 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN |
| Securing Location | AA END |
| 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 |
|---|---|
| 10-CB-14 | 3/9 Design control — primary reference U.S. Government activity |
| 801E6225 | 5/9 Secondary reference Kersey / American Lafrance a Div of Figgie International Inc |
NSN 3020-00-640-2290 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-640-2290: FSC Application Data: HOSE AND REEL ASSEMBLY,CB,TRUCK,CRASH,FIRE AND RESCUE; Hub Outside Diameter: 1.750 INCHES NOMINAL AA END IN; Securing Method: THREADED HOLE(S); Bore Length: 0.875 INCHES NOMINAL IN. 21 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.