The Sprocket Wheel, cataloged under National Stock Number 3020-00-780-5404, 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 Westinghouse Electric Corp. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-780-5404 |
| Primary Part Number | 228B277H01 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Hub Outside Diameter | 0.500 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.406 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.187 INCHES NOMINAL IN |
| Outside Diameter | 1.657 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-S-763, CLASS 7, TYPE B FED SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 1.674 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 28 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Hub End to Flange End | 0.250 INCHES NOMINAL BOTH ENDS IN |
| Securing Hole Quantity | 1 |
| Thread Size | 6-32 |
| Surface Treatment | PASSIVATE |
| Hole Location | ONE LOCATED ON HUB PORTION OF GEAR BETWEEN HUB AND FACE |
| Bore Diameter | 0.249 INCHES NOMINAL IN |
| Material | STEEL COMP 303 OR STEEL COMP 303SE |
| Face Width | 0.156 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 |
|---|---|
| 228B277H01 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 228B277H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-780-5404 is a Sprocket Wheel, manufactured by Westinghouse Electric Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-780-5404 has 1 manufacturer part number on file: 228B277H01 (Westinghouse Electric Corp).
Key specifications for 228B277H01: Hub Outside Diameter: 0.500 INCHES NOMINAL BOTH ENDS IN; Securing Method: THREADED HOLE(S); Bore Length: 0.406 INCHES NOMINAL IN; Design Form: PLAIN. 23 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.