The Retainer Assy, cataloged under National Stock Number 1680-01-555-9019, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-01-555-9019 |
| Primary Part Number | 123HM40096-1 |
| Item Name | Retainer Assy |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Overall Diameter | 1.437 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 123HM40096-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123HM40096-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| 123HM40096-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 1680-01-555-9019 is a Retainer Assy, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-555-9019 has 1 manufacturer part number on file: 123HM40096-1 (Northrop Grumman Systems Corporation).
Key specifications for 123HM40096-1: Overall Height: 0.343 INCHES NOMINAL IN; Overall Diameter: 1.437 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: (INAVY) RETAINER HYDRAULIC-STEER DAMPER-LOWER SWIVEL; End Item Identification: C-2A AIRCRAFT A. 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.
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.