The Gear Cluster, cataloged under National Stock Number 3020-01-239-4227, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-239-4227 |
| Primary Part Number | 014304-501 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.162 INCHES FIRST END IN |
| Bore Nominal Diameter | 1.3115 INCHES SECOND END IN |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Design Type | SPUR ALL GEARS |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Overall Length | 0.750 INCHES IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter | 1.917 INCHES FIRST GEAR IN |
| Nominal Outside Diameter | 3.169 INCHES SECOND GEAR IN |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL COMP 4140 OVERALL |
| Construction | SOLID |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 014304-501 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 014304-501 | 3/9 Design control — primary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
NSN 3020-01-239-4227 is a Gear Cluster, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-239-4227 has 1 manufacturer part number on file: 014304-501 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
Key specifications for 014304-501: Bore Nominal Diameter: 1.162 INCHES FIRST END IN; Bore Nominal Diameter: 1.3115 INCHES SECOND END IN; Surface Treatment Document and Classification: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Design Type: SPUR ALL GEARS. 13 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.