The Sprocket Wheel, cataloged under National Stock Number 3020-00-261-2871, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-261-2871 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Outside Diameter | 3.500 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | HUB |
| Bore Length | 0.812 INCHES NOMINAL IN |
| Design Form | SPOKED |
| Tooth Pitch | 0.625 INCHES NOMINAL IN |
| Asa Standard Chain Number | 50 |
| Outside Diameter | 19.670 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | SAE 1025 ASSN STD SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 19.301 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 97 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 1.043 INCHES MINIMUM AND 1.044 INCHES MAXIMUM IN |
| Distance From Hub End to Flange End | 3.203 INCHES NOMINAL AA END IN |
| Keyway Width | 0.375 INCHES NOMINAL IN |
| Bore Diameter | 1.750 INCHES NOMINAL IN |
| Material | STEEL COMP 1025 |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.337 INCHES MINIMUM AND 0.349 INCHES MAXIMUM 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 |
|---|---|
| 233-447 | 3/9 Design control — primary reference American Laundry Machinery Inc |
NSN 3020-00-261-2871 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-347-8476, 6750-01-427-2531. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-261-2871: Hub Outside Diameter: 3.500 INCHES NOMINAL BOTH ENDS IN; Securing Method: HUB; Bore Length: 0.812 INCHES NOMINAL IN; Design Form: SPOKED. 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.
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.