The Sprocket Wheel, cataloged under National Stock Number 3020-00-294-8149, 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 Hoffman/new Yorker, Inc.. Government technical data includes 28 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 | 3020-00-294-8149 |
| Primary Part Number | 078434 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hoffman/new Yorker, Inc. |
| Status | ACTIVE |
| Hub Outside Diameter | 3.500 INCHES NOMINAL AA END IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 2.500 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Asa Standard Chain Number | 40-2 |
| Outside Diameter | 19.713 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 19.419 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 2 |
| Teeth Quantity Per Row | 122 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 1.2177 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 1.661 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 1 |
| Thread Size | 1/4 IN.-20 IN |
| Center to Center Distance Between Teeth Rows | 0.282 INCHES NOMINAL IN |
| Keyway Width | 0.250 INCHES NOMINAL IN |
| Hole Location | ON TOP OF KEY |
| Bore Diameter | 1.9355 INCHES MINIMUM AND 1.9375 INCHES MAXIMUM IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY AND LIGHTENING HOLE |
| Face Width | 0.839 INCHES NOMINAL IN |
| Securing Location | AA END |
| 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 |
|---|---|
| 078434 PRIMARY | Hoffman/new Yorker, Inc. (USA) |
NSN 3020-00-294-8149 is a Sprocket Wheel, manufactured by Hoffman/new Yorker, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-294-8149 has 1 manufacturer part number on file: 078434 (Hoffman/new Yorker, Inc.).
Key specifications for 078434: Hub Outside Diameter: 3.500 INCHES NOMINAL AA END IN; Securing Method: THREADED HOLE(S); Bore Length: 2.500 INCHES NOMINAL IN; Design Form: WEBBED. 28 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.