The Kit-Hydro Check, cataloged under National Stock Number 4920-01-577-6559, 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 Lockheed Martin Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Kit-Hydro Check |
| FSC / FSG | 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Greene Machine & Manufacturing Inc (CAGE 03ND7); C & T Industrial Machine Shop, Inc. (CAGE 4SAY8); Tyonek Machining and Fabrication, Llc (CAGE 7KQY0); Lockheed Martin Corporation (CAGE 0L1E5) |
| Parameter | Value |
|---|---|
| NSN | 4920-01-577-6559 |
| Primary Part Number | RG470 |
| Item Name | Kit-Hydro Check |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| RG470 | Greene Machine & Manufacturing Inc (USA) |
| RG470 | C & T Industrial Machine Shop, Inc. (USA) |
| RG470 | Tyonek Machining and Fabrication, Llc (USA) |
| RG470 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| RG470 | 5/9 Secondary reference Bryant's Machine Shop Inc |
NSN 4920-01-577-6559 is a Kit-Hydro Check, manufactured by Lockheed Martin Corporation, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-577-6559 has 4 manufacturer part numbers on file: RG470 (Greene Machine & Manufacturing Inc), RG470 (C & T Industrial Machine Shop, Inc.), RG470 (Tyonek Machining and Fabrication, Llc), RG470 (Lockheed Martin Corporation).
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 4920-01-577-6559 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.