The Gearbox Assembly,aircraft, cataloged under National Stock Number 1680-01-159-9590, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-159-9590 |
| Primary Part Number | 177370-2 |
| Item Name | Gearbox Assembly,aircraft |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DRAWING 988974G94043 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 177370-2 | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
| Reference | Meaning |
|---|---|
| 4G94043-111A | 1/3 Source control — Government-approved source U.S. Government activity |
NSN 1680-01-159-9590 is a Gearbox Assembly,aircraft, manufactured by Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-159-9590 has 1 manufacturer part number on file: 177370-2 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
2 possible matches (shared part number, not a government interchangeability claim): 5825-01-441-1474, 5825-01-443-5417. Verify interchangeability with system specifications before substitution.
Key specifications for 177370-2: Special Features: RIGHT ANGLE GEARBOX, ACTUATING MECHANISM, NOSE LANDING GEAR DOORS; End Item Identification: C-5 AIRCRAFT; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DRAWING 988974G94043. 1 specification is 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 1680-01-159-9590 has DEMIL Code Q. 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.