The Axle,landing Gear, cataloged under National Stock Number 1620-00-009-4247, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-00-009-4247 |
| Primary Part Number | 6-41639-503 |
| Item Name | Axle,landing Gear |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Basic Material | STEEL |
| 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 |
|---|---|
| 6-41639-503 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 6-41639-503 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 6-41639-503 | Nassau Tool Works, Inc (USA) |
| 6-41639-503 | Machine Specialties, Llc (USA) |
| 6-41639-503 | Hdi Landing Gear Usa Inc (USA) |
| 6-41639-503 | Bemsco Inc (USA) |
| 6-41639-503 | Aerometals, Inc. (USA) |
| 6-41639-503 | Heroux-Devtek Inc (CAN) |
| Reference | Meaning |
|---|---|
| 6-41639-503 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 6-41639-503 | 5/2 Secondary reference U.S. Government activity |
NSN 1620-00-009-4247 is a Axle,landing Gear, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-009-4247 has 8 manufacturer part numbers on file: 6-41639-503 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 6-41639-503 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 6-41639-503 (Nassau Tool Works, Inc), 6-41639-503 (Machine Specialties, Llc), 6-41639-503 (Hdi Landing Gear Usa Inc) and 3 more.
Key specifications for 6-41639-503: Surface Finish: 125.0 MICROINCHES; Overall Height: 1.930 INCHES NOMINAL IN; Basic Material: STEEL; Overall Length: 8.380 INCHES NOMINAL IN. 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 1620-00-009-4247 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.