The Sprocket Wheel, cataloged under National Stock Number 3020-00-627-9745, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-627-9745 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Outside Diameter | 2.500 INCHES NOMINAL AA END IN |
| Securing Method | PRESS FIT |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Asa Standard Chain Number | 40 |
| Outside Diameter | 4.258 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 3.989 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Counterbore Depth | 0.137 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 25 |
| Counterbore Location | BB END |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Counterbore Diameter | 1.120 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.716 INCHES NOMINAL AA END IN |
| Surface Treatment | ZINC |
| Bore Diameter | 0.751 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Material | STEEL |
| Furnished Items | COUNTERBORE |
| Face Width | 0.284 INCHES NOMINAL IN |
| Securing Location | BOTH ENDS |
| 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 |
|---|---|
| HKSB25-2 | 5/1 Secondary reference Altra Industrial Motion Corp. |
| CB57-42472-1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-627-9745 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-627-9745: Hub Outside Diameter: 2.500 INCHES NOMINAL AA END IN; Securing Method: PRESS FIT; Bore Length: 1.000 INCHES NOMINAL IN; Design Form: PLAIN. 24 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.