The Sprocket Wheel, cataloged under National Stock Number 3020-01-185-4472, 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 Rexnord Holdings Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-185-4472 |
| Primary Part Number | 50B11 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rexnord Holdings Inc |
| Status | ACTIVE |
| Hub Outside Diameter | 1.750 INCHES NOMINAL AA END IN |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.625 INCHES NOMINAL IN |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 11 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Hub End to Flange End | 0.657 INCHES NOMINAL AA END IN |
| Bore Diameter | 0.625 INCHES NOMINAL IN |
| Material | STEEL |
| Face Width | 0.343 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 |
NSN 3020-01-185-4472 is a Sprocket Wheel, manufactured by Rexnord Holdings Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-185-4472 has 2 manufacturer part numbers on file: 50B11 (Rexnord Holdings Inc), 50B11 (Brewer Machine & Gear Co).
Key specifications for 50B11: Hub Outside Diameter: 1.750 INCHES NOMINAL AA END IN; Bore Length: 1.000 INCHES NOMINAL IN; Design Form: PLAIN; Tooth Pitch: 0.625 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.