The Sprocket Wheel, cataloged under National Stock Number 3020-01-238-8304, 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 Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-238-8304 |
| Primary Part Number | 014504-501 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Hub Outside Diameter | 0.668 INCHES NOMINAL AA END IN |
| Hub Outside Diameter | 2.083 INCHES NOMINAL BB END IN |
| Bore Length | 0.827 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.250 INCHES NOMINAL IN |
| Outside Diameter | 4.920 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | MIL-S-5626, COMP 4140 MIL SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 4.778 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Counterbore Depth | 0.960 INCHES NOMINAL IN |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 60 |
| Counterbore Location | AA END |
| Hardness Rating Test Method | NOT RATED |
| Counterbore Diameter | 0.437 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.610 INCHES NOMINAL BB END IN |
| Distance From Hub End to Flange End | 1.517 INCHES NOMINAL AA END IN |
| Surface Treatment | PHOSPHATE MANGANESE |
| Bore Diameter | 0.060 INCHES NOMINAL IN |
| Material | STEEL COMP 4140 |
| Furnished Items | COUNTERBORE AND LIGHTENING HOLE |
| Face Width | 0.110 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 |
|---|---|
| 014504-501 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 014504-501 | 3/9 Design control — primary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
NSN 3020-01-238-8304 is a Sprocket Wheel, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-238-8304 has 1 manufacturer part number on file: 014504-501 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
Key specifications for 014504-501: Hub Outside Diameter: 0.668 INCHES NOMINAL AA END IN; Hub Outside Diameter: 2.083 INCHES NOMINAL BB END IN; Bore Length: 0.827 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.