The Sprocket Wheel, cataloged under National Stock Number 3020-00-725-0263, 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 Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-725-0263 |
| Primary Part Number | EM5-25 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Hub Outside Diameter | 0.500 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.375 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.1475 INCHES NOMINAL IN |
| Outside Diameter | 1.228 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 1.177 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 25 |
| 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 | NO.6(0.138 IN.)-32 IN |
| Surface Treatment | PASSIVATE |
| Hole Location | ONE LOCATED ON HUB PORTION OF SPROCKET BETWEEN HUB END AND FACE |
| Bore Diameter | 0.2498 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Face Width | 0.125 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 |
|---|---|
| 335C852H03 | Westinghouse Electric Corp (USA) |
| EM5-25 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| Reference | Meaning |
|---|---|
| 335C852H03 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-725-0263 is a Sprocket Wheel, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-725-0263 has 2 manufacturer part numbers on file: 335C852H03 (Westinghouse Electric Corp), EM5-25 (Roller Bearing Co of America, Inc Div Pic Design).
Key specifications for EM5-25: Hub Outside Diameter: 0.500 INCHES NOMINAL BOTH ENDS IN; Securing Method: THREADED HOLE(S); Bore Length: 0.375 INCHES NOMINAL IN; Design Form: PLAIN. 22 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.