The Sprocket Wheel, cataloged under National Stock Number 3020-01-228-1180, 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 Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-228-1180 |
| Primary Part Number | E92175 PIECE 3 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Hub Outside Diameter | 4.000 INCHES NOMINAL AA END IN |
| Hub Outside Diameter | 3.938 INCHES NOMINAL BB END IN |
| Bore Length | 3.250 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.750 INCHES NOMINAL IN |
| Asa Standard Chain Number | 60 |
| Outside Diameter | 5.185 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Pitch Diameter | 4.775 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Counterbore Depth | 0.075 INCHES NOMINAL IN |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 20 |
| Counterbore Location | AA END |
| Hardness Rating Test Method | NOT RATED |
| Counterbore Diameter | 3.062 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.063 INCHES NOMINAL BB END IN |
| Distance From Hub End to Flange End | 2.728 INCHES NOMINAL AA END IN |
| Bore Diameter | 1.752 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | COUNTERBORE AND KEYING FACILITY |
| Face Width | 0.459 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 |
| Part Number | Manufacturer |
|---|---|
| E92175 PIECE 3 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 1549242 PIECE 3 | 5/2 Secondary reference U.S. Government activity |
| 1549242 | D/9 Drawing number reference only U.S. Government activity |
| E92175 | D/9 Drawing number reference only Timken Gears & Services Inc. Div Philadelphia Gear |
NSN 3020-01-228-1180 is a Sprocket Wheel, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-228-1180 has 1 manufacturer part number on file: E92175 PIECE 3 (Timken Gears & Services Inc. Div Philadelphia Gear).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-228-1181. Verify interchangeability with system specifications before substitution.
Key specifications for E92175 PIECE 3: Hub Outside Diameter: 4.000 INCHES NOMINAL AA END IN; Hub Outside Diameter: 3.938 INCHES NOMINAL BB END IN; Bore Length: 3.250 INCHES NOMINAL IN; Design Form: PLAIN. 24 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.