The Sprocket Wheel, cataloged under National Stock Number 3020-00-704-9476, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 25 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-704-9476 |
| Primary Part Number | 7049476 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Securing Method | DRILLED HOLE |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM |
| Tooth Pitch | 5.514 INCHES NOMINAL IN |
| Outside Diameter | 24.922 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 55.0 ROCKWELL C MINIMUM BODY AND 60.0 ROCKWELL C MAXIMUM BODY |
| Material Document and Classification | QQ-S-624, COMP FS4150-CANCELED FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-624, COMP FS8645-CANCELED FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-624, FS8650-CANCELED FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-624, COMP FS8750-CANCELED FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-624, COMP FS9445-CANCELED FED SPEC 5TH MATERIAL RESPONSE |
| Pitch Diameter | 22.816 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Counterbore Depth | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 13 |
| Counterbore Location | AA END |
| Hardness Rating Test Method | ROCKWELL |
| Counterbore Diameter | 17.375 INCHES MINIMUM AND 17.380 INCHES MAXIMUM IN |
| Securing Hole Quantity | 13 |
| Bolt Circle Diameter | 15.876 INCHES NOMINAL IN |
| Tapered Hole Size | 0.640 TO 0.6425 |
| Hole Location | CENTERLINE OF TEETH |
| Bore Diameter | 14.313 INCHES MINIMUM AND 14.438 INCHES MAXIMUM IN |
| Material | STEEL COMP 4150 AND STEEL COMP 8645 AND STEEL COMP 8650 AND STEEL COMP 8750 AND STEEL COMP 9445 |
| Furnished Items | COUNTERBORE |
| Face Width | 1.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7049476 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-00-704-9476 is a Sprocket Wheel, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-704-9476 has 1 manufacturer part number on file: 7049476 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7049476: Securing Method: DRILLED HOLE; Bore Length: 1.000 INCHES NOMINAL IN; Design Form: PLAIN; Teeth Hardness Rating: 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM. 25 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 3020-00-704-9476 has DEMIL Code B. 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.