The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-00-227-7053, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-227-7053 |
| Primary Part Number | 123ECM51009-11 |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Flow Control Device | CONE |
| Connection Style | FLARED (TUBE) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Nominal Thread Size | 0.562 INCHES SECOND END IN |
| Surface Treatment | PASSIVATE |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL COMP 303SE OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | UNF SECOND END |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 123ECM51009-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123ECM51009-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123ECM51009 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4820-00-227-7053 is a Valve,bleeder,hydraulic System, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-227-7053 has 1 manufacturer part number on file: 123ECM51009-11 (Northrop Grumman Systems Corporation).
Key specifications for 123ECM51009-11: Flow Control Device: CONE; Connection Style: FLARED (TUBE) SECOND END; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Material Document and Classification: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 14 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.