The Retrofit Kit,level Sensor Assemb, cataloged under National Stock Number 6680-01-682-9143, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Retrofit Kit,level Sensor Assemb |
| FSC / FSG | 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments (FSG 66) |
| Manufacturers | Northrop Grumman Systems Corporation Div Marine Systems (CAGE 04804) |
| Parameter | Value |
|---|---|
| NSN | 6680-01-682-9143 |
| Primary Part Number | 2056AS0545-2 |
| Item Name | Retrofit Kit,level Sensor Assemb |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Northrop Grumman Systems Corporation Div Marine Systems |
| 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 |
|---|---|
| 2056AS0545-2 PRIMARY | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| Reference | Meaning |
|---|---|
| 2056AS0545 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 6680-01-682-9143 is a Retrofit Kit,level Sensor Assemb, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-682-9143 has 1 manufacturer part number on file: 2056AS0545-2 (Northrop Grumman Systems Corporation Div Marine Systems).
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 6680-01-682-9143 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.