The Gear Cluster,internal-External,s, cataloged under National Stock Number 3020-01-130-6763, 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 Div Defense. Government technical data includes 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-130-6763 |
| Primary Part Number | 181873-1 |
| Item Name | Gear Cluster,internal-External,s |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,OVERALL;0.6700 IN. O/A LG;1.480 IN. OD HUB ONE END;0.251 IN. DEEP,1.312 IN.OD COUNTERBORE LOCATED ON HUB END;EXTERNAL GEAR,80 TEETH;25 DEG PRESSURE ANGLE,48 DIAMETRAL PITCH;1.6667 IN. PITCH DIA;INTERNAL GEAR,58 TEETH;44 DIAMETRAL PITCH;25 DEG PRESSURE ANGLE;1.3182 IN. PITCH DIA IN |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 181873-1 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10153943 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 181873 | D/9 Drawing number reference only Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| 181873-1 | 5/9 Secondary reference Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| 181873-1 | 3/9 Design control — primary reference Curtiss-Wright Controls, Inc. Div Actuation Division |
NSN 3020-01-130-6763 is a Gear Cluster,internal-External,s, manufactured by The Boeing Company Div Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-130-6763 has 1 manufacturer part number on file: 181873-1 (The Boeing Company Div Defense).
Key specifications for 181873-1: General Characteristics Item Description: STEEL,OVERALL;0.6700 IN. O/A LG;1.480 IN. OD HUB ONE END;0.251 IN. DEEP,1.312 IN.OD COUNTERBORE LOCATED ON HUB END;EXTERNAL GEAR,80 TEETH;25 DEG PRESSURE ANGLE,48 DIAMETRAL PITCH;1.6667 IN. PITCH DIA;INTERNAL GEAR,58 TEETH;44 DIAMETRAL PITCH;25 DEG PRESSURE ANGLE;1.3182 IN. PITCH DIA IN; Criticality Code Justification: FEAT; Special Features: WEAPON SYSTEM ESSENTIAL; End Item Identification: F/A-18 HORNET AIRCRAFT. 2 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.
NSN 3020-01-130-6763 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.