The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-446-3764, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Gast Mfg 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-446-3764 |
| Primary Part Number | AA550C-V |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Gast Mfg Corp |
| Status | ACTIVE |
| Media for Which Designed | AIR SINGLE RESPONSE |
| 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 |
|---|---|
| AA550C-V PRIMARY | Gast Mfg Corp (USA) |
| Reference | Meaning |
|---|---|
| 40239 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-446-3764 is a Valve,bleeder,hydraulic System, manufactured by Gast Mfg Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-446-3764 has 1 manufacturer part number on file: AA550C-V (Gast Mfg Corp).
Key specifications for AA550C-V: Media for Which Designed: AIR SINGLE RESPONSE; End Item Identification: 4920-01-384-3297; SUPPORT EQUIPMENT, F-16 AIRCRAFT; MODEL A/E 24M-414920-01-384-3297; SUPPORT EQUIPMENT, F-16 AIRCRAFT; MODEL A/E 24M-41. 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.
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.