The Filling Unit,radar, cataloged under National Stock Number 4920-01-121-4459, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Hydra-Tec Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4920-01-121-4459 |
| Primary Part Number | 123SFL50157-1 |
| Item Name | Filling Unit,radar |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Hydra-Tec Corp |
| Status | ACTIVE |
| FSC Application Data | ACFT MAINTENANCE AND REPAIR SHOP SPECIALIZED EQUIPMENT |
| 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 |
|---|---|
| 123SFL50157-1 PRIMARY | Hydra-Tec Corp (USA) |
| Reference | Meaning |
|---|---|
| 123SFL50157-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123SFL50157-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 4920-01-121-4459 is a Filling Unit,radar, manufactured by Hydra-Tec Corp, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-121-4459 has 1 manufacturer part number on file: 123SFL50157-1 (Hydra-Tec Corp).
Key specifications for 123SFL50157-1: FSC Application Data: ACFT MAINTENANCE AND REPAIR SHOP SPECIALIZED EQUIPMENT. 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 4920-01-121-4459 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.