The Downlock Assembly,landing Gear, cataloged under National Stock Number 1620-01-683-6181, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Alexander Manufacturing Company, Inc.. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1620-01-683-6181 |
| Primary Part Number | 16L104-31 |
| Item Name | Downlock Assembly,landing Gear |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Alexander Manufacturing Company, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 1XKR3 | Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc (USA) |
| 16L104-31 PRIMARY | Alexander Manufacturing Company, Inc. (USA) |
| 16L104-31 | Bright Lights Usa, Inc Dba Blusa Defense Manufacturing (USA) |
| 16L104-31 | Precision Sevens, Inc (USA) |
| Reference | Meaning |
|---|---|
| 16L104-31 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-01-683-6181 is a Downlock Assembly,landing Gear, manufactured by Alexander Manufacturing Company, Inc., classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-683-6181 has 4 manufacturer part numbers on file: 1XKR3 (Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc), 16L104-31 (Alexander Manufacturing Company, Inc.), 16L104-31 (Bright Lights Usa, Inc Dba Blusa Defense Manufacturing), 16L104-31 (Precision Sevens, Inc).
Key specifications for 16L104-31: Part Name Assigned by Controlling Agency: ACTUATOR, DOWNLOCK SWITCH, MAIN LANDING GEAR. 0 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 1620-01-683-6181 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.