The Plate Coupler,trunnion Assembly,, cataloged under National Stock Number 1620-01-342-4739, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Goodrich Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-342-4739 |
| Primary Part Number | 1881A489 |
| Item Name | Plate Coupler,trunnion Assembly, |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | AIDS IN MAINTAINING POSITION OF THE RETAINER PLATE FOR DOWNLOCK ACTUATOR;4140 STEEL PER AMS 0396 OR MIL-S-8600 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1881A489 PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1881A489 | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 1620-01-342-4739 is a Plate Coupler,trunnion Assembly,, manufactured by Goodrich Corporation, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-342-4739 has 1 manufacturer part number on file: 1881A489 (Goodrich Corporation).
Key specifications for 1881A489: General Characteristics Item Description: AIDS IN MAINTAINING POSITION OF THE RETAINER PLATE FOR DOWNLOCK ACTUATOR;4140 STEEL PER AMS 0396 OR MIL-S-8600; End Item Identification: B1-B AIRCRAFT,MLG. 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 1620-01-342-4739 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.