The Hook Assembly,uplock, cataloged under National Stock Number 1620-00-451-7684, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-00-451-7684 |
| Item Name | Hook Assembly,uplock |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Status | ACTIVE |
| General Characteristics Item Description | 4.650 IN. APPROX O/A LG,0.628 IN. APPROX O/A W,2.375 IN.APPROX O/A H,MATERIAL STEEL,FINISH CADMIUM PLATE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| A51G10580-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51G10580-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 1620-00-451-7684 is a Hook Assembly,uplock, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
Key specifications for 1620-00-451-7684: General Characteristics Item Description: 4.650 IN. APPROX O/A LG,0.628 IN. APPROX O/A W,2.375 IN.APPROX O/A H,MATERIAL STEEL,FINISH CADMIUM PLATE 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 1620-00-451-7684 has DEMIL Code B. 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.