The Sprocket Wheel, cataloged under National Stock Number 3020-01-204-5879, 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 24 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 | 3020-01-204-5879 |
| Primary Part Number | 12292420-4 |
| 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 | 1.156 INCHES NOMINAL AA END IN |
| Bore Length | 0.625 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Lubrication Mode | NO VISIBLE MEANS |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 35.0 ROCKWELL C MINIMUM BODY AND 50.0 ROCKWELL C MAXIMUM BODY |
| Material Document and Classification | AISI 1030 ASSN STD 1ST MATERIAL RESPONSE AND AISI 4140 ASSN STD 2ND MATERIAL RESPONSE |
| Pitch Diameter | 1.618 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 10 |
| Hardness Rating Test Method | ROCKWELL |
| Distance From Center of Bore to Bottom of Keyway | 0.315 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.520 INCHES NOMINAL AA END IN |
| Keyway Width | 0.002 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE MANGANESE |
| Bore Diameter | 0.627 INCHES NOMINAL IN |
| Material | STEEL COMP 1030 OR STEEL COMP 4140 |
| Furnished Items | KEYING FACILITY AND BORE BEARING |
| Face Width | 0.105 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12292420-4 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-204-5879 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 3020-01-204-5879 has 1 manufacturer part number on file: 12292420-4 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12292420-4: Hub Outside Diameter: 1.156 INCHES NOMINAL AA END IN; Bore Length: 0.625 INCHES NOMINAL IN; Design Form: PLAIN; Teeth Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM. 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.
NSN 3020-01-204-5879 has DEMIL Code D. 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.