The Sprocket Wheel, cataloged under National Stock Number 3020-01-076-4261, 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 15 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-076-4261 |
| Primary Part Number | 12266115 |
| 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 |
| Hub Outside Diameter | 3.560 INCHES NOMINAL AA END IN |
| Bore Length | 1.500 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.750 INCHES NOMINAL IN |
| Outside Diameter | 5.907 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 5.026 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 24 |
| Hardness Rating Test Method | NOT RATED |
| Distance From Hub End to Flange End | 1.041 INCHES NOMINAL AA END IN |
| Bore Diameter | 2.400 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 12266115 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-076-4261 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 3020-01-076-4261 has 1 manufacturer part number on file: 12266115 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-446-5926. Verify interchangeability with system specifications before substitution.
Key specifications for 12266115: Hub Outside Diameter: 3.560 INCHES NOMINAL AA END IN; Bore Length: 1.500 INCHES NOMINAL IN; Design Form: PLAIN; Tooth Pitch: 0.750 INCHES NOMINAL IN. 15 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.