The Gear Cluster, cataloged under National Stock Number 3020-01-164-3970, 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 The Boeing Company. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-164-3970 |
| Primary Part Number | 7-311310033 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.827 INCHES FIRST END IN |
| Criticality Code Justification | FEAT |
| Nominal Outside Diameter | 3.977 INCHES ALL GEARS 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 |
|---|---|
| 7-311310033 | Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc (USA) |
| 7-311310033 | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. (USA) |
| 7-311310033 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-311310033 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 3020-01-164-3970 is a Gear Cluster, manufactured by The Boeing Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-164-3970 has 3 manufacturer part numbers on file: 7-311310033 (Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc), 7-311310033 (Heligear Acquisition Co. Dba Northstar Aerospace, Inc.), 7-311310033 (The Boeing Company).
Key specifications for 7-311310033: Bore Nominal Diameter: 2.827 INCHES FIRST END IN; Criticality Code Justification: FEAT; Nominal Outside Diameter: 3.977 INCHES ALL GEARS IN; Special Features: NSN IS A CRITICAL SAFETY ITEM (CSI). 3 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.