The Sprocket Wheel, cataloged under National Stock Number 3020-00-151-4425, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-151-4425 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Outside Diameter | 1.813 INCHES NOMINAL AA END IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.813 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.375 INCHES NOMINAL IN |
| Asa Standard Chain Number | 35 |
| Outside Diameter | 2.590 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Pitch Diameter | 2.400 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 20 |
| Protruding Hub Characteristic | PLAIN |
| Distance From Center of Bore to Bottom of Keyway | 0.313 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.645 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 1 |
| Thread Size | 1/4-20 |
| Keyway Width | 0.125 INCHES NOMINAL IN |
| Hole Location | THROUGH HUB |
| Bore Diameter | 0.500 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.168 INCHES NOMINAL IN |
| Furnished Items and Quantity | ONE SETSCREW |
| Reference Number Differentiating Characteristics | FREE OF MERCURY/RADIATION CONTAMINATION FOR NUCLEAR PROPULSION PLANT USE |
| 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 |
|---|---|
| KSA20 | 5/9 Secondary reference Altra Industrial Motion Corp. |
| 35B20-1/2 | 3/1 Design control — primary reference Altra Industrial Motion Corp. |
NSN 3020-00-151-4425 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-151-4425: Hub Outside Diameter: 1.813 INCHES NOMINAL AA END IN; Securing Method: THREADED HOLE(S); Bore Length: 0.813 INCHES NOMINAL IN; Design Form: PLAIN. 27 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.