The Retainer,rod,nose Gear, cataloged under National Stock Number 1620-00-306-9957, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Alatus Aerosystems Dba F.k.a., Triumph Structures-Los Angeles. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-00-306-9957 |
| Primary Part Number | 9-55621 |
| Item Name | Retainer,rod,nose Gear |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Alatus Aerosystems Dba F.k.a., Triumph Structures-Los Angeles |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,1.980 IN. W,4.374 IN. DIA IN |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 9-55621 | Alatus Aerosystems Dba F.k.a., Triumph Structures-Los Angeles (USA) |
| 9-55621 | Goodrich Corporation (USA) |
| 9-55621 | Aerometals, Inc. (USA) |
| 9-55621 | The Boeing Company Div Commercial (USA) |
| 9-55621 | Heroux-Devtek Inc (CAN) |
| 9-55621 | Hdi Landing Gear Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 9-55621 | 3/2 Design control — primary reference U.S. Government activity |
| 9-55621 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 9-55621 | 5/2 Secondary reference U.S. Government activity |
NSN 1620-00-306-9957 is a Retainer,rod,nose Gear, manufactured by Alatus Aerosystems Dba F.k.a., Triumph Structures-Los Angeles, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-306-9957 has 6 manufacturer part numbers on file: 9-55621 (Alatus Aerosystems Dba F.k.a., Triumph Structures-Los Angeles), 9-55621 (Goodrich Corporation), 9-55621 (Aerometals, Inc.), 9-55621 (The Boeing Company Div Commercial), 9-55621 (Heroux-Devtek Inc) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5998-00-465-2101. Verify interchangeability with system specifications before substitution.
Key specifications for 9-55621: General Characteristics Item Description: ALUMINUM ALLOY,1.980 IN. W,4.374 IN. DIA IN; Criticality Code Justification: AGAV; End Item Identification: KC135 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 1620-00-306-9957 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.