The Disk,valve, cataloged under National Stock Number 1650-01-166-2588, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-166-2588 |
| Primary Part Number | L5871090-003 |
| Item Name | Disk,valve |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT HYDRAULIC SYSTEM |
| Outside Diameter | 0.311 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Material Document and Classification | QQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Seat Radius | 45.000 INCHES NOMINAL IN |
| Media for Which Designed | HYDRAULIC FLUID |
| Material | STEEL COMP 440C |
| 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 |
|---|---|
| L5871090-003 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| L5871090-003 | Woodward Hrt, Inc. Dba Woodward Hrt Inc (USA) |
| L5871090-003 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| L5871090-003 | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| L5871090-003 | 5/2 Secondary reference U.S. Government activity |
| L5871090-003 | 5/9 Secondary reference Tactair Fluid Controls Inc Phoenix Controls Div |
| L5871090-003 | 5/2 Secondary reference U.S. Government activity |
NSN 1650-01-166-2588 is a Disk,valve, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-166-2588 has 4 manufacturer part numbers on file: L5871090-003 (The Boeing Company Div Legacy Am&m), L5871090-003 (Woodward Hrt, Inc. Dba Woodward Hrt Inc), L5871090-003 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), L5871090-003 (Tactair Fluid Controls Inc).
Key specifications for L5871090-003: Overall Height: 0.425 INCHES NOMINAL IN; FSC Application Data: AIRCRAFT HYDRAULIC SYSTEM; Outside Diameter: 0.311 INCHES NOMINAL IN; Style Designator: PLUG. 7 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.
NSN 1650-01-166-2588 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.