The Support,spring,downlock Mlg, cataloged under National Stock Number 1620-01-119-0666, 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 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-119-0666 |
| Primary Part Number | 74A410770-2001 |
| Item Name | Support,spring,downlock Mlg |
| 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,COMP 7075-T73; 3.280 IN. O/A LG; 0.750 IN. O/A DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74A410770-2001 | A. J. Associates Manufacturing & Engineering Co. Inc. (USA) |
| 74A410770-2001 | Safran Landing Systems Canada Inc. (CAN) |
| 74A410770-2001 | Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA) |
| 74A410770-2001 | Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc (USA) |
| 74A410770-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A410770-2001 | Nassau Tool Works, Inc (USA) |
| 74A410770-2001 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 74A410770-2001 | Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division (ISR) |
| 74A410770-2001 | Blair Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 10153713 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A410770-2001 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A410770-2001 | 5/9 Secondary reference Israel Aerospace Industries Ltd.shl-Aero Assemblies Division |
| 74A410770-2001 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A410770-2001 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 74A410770-2001 | 5/2 Secondary reference U.S. Government activity |
| 74A410770-2001 | C/1 Advisory reference — outside the item-of-supply concept Circor Aerospace, Inc. Div Circor |
NSN 1620-01-119-0666 is a Support,spring,downlock Mlg, manufactured by The Boeing Company Div Defense, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-119-0666 has 9 manufacturer part numbers on file: 74A410770-2001 (A. J. Associates Manufacturing & Engineering Co. Inc.), 74A410770-2001 (Safran Landing Systems Canada Inc.), 74A410770-2001 (Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co), 74A410770-2001 (Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc), 74A410770-2001 (The Boeing Company Div Defense) and 4 more.
Key specifications for 74A410770-2001: General Characteristics Item Description: ALUMINUM ALLOY PER QQ-A-225/9,COMP 7075-T73; 3.280 IN. O/A LG; 0.750 IN. O/A DIA 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.
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.