The Extension,piston Lock, cataloged under National Stock Number 1620-01-107-6826, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-107-6826 |
| Primary Part Number | 74A450808-1001 |
| Item Name | Extension,piston Lock |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY PER QQ-A-225/9,7075-T73; 0.850 IN. O/A DIA; 5.160 IN. LG IN |
| 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 |
|---|---|
| 74A450808-1001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A450808-1001 | Israel Aerospace Industries Ltd.shl-Aero Assemblies Division (ISR) |
| Reference | Meaning |
|---|---|
| 74A450808-1001 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 10153675 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A450808-1001 | 5/9 Secondary reference Heroux-Devtek Inc |
| 74A450808-1001 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 74A450808-1001 | 5/9 Secondary reference Nassau Tool Works, Inc |
| 74A450808-1001 | 5/9 Secondary reference Safran Landing Systems Canada Inc. |
| 74A450808-1001 | 5/9 Secondary reference U.S. Government activity |
| 74A450808-1001 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 1958-151 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A450808-1001 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A450808-1001 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 74A450808-1001 | C/1 Advisory reference — outside the item-of-supply concept Circor Aerospace, Inc. Div Circor |
NSN 1620-01-107-6826 is a Extension,piston Lock, manufactured by The Boeing Company Div Defense, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-107-6826 has 2 manufacturer part numbers on file: 74A450808-1001 (The Boeing Company Div Defense), 74A450808-1001 (Israel Aerospace Industries Ltd.shl-Aero Assemblies Division).
Key specifications for 74A450808-1001: General Characteristics Item Description: ALUMINUM ALLOY PER QQ-A-225/9,7075-T73; 0.850 IN. O/A DIA; 5.160 IN. LG IN. 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 1620-01-107-6826 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.