The Filter,fluid, cataloged under National Stock Number 1650-01-556-4384, 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 Swagelok Co. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-556-4384 |
| Primary Part Number | 8-4F4-40 |
| Item Name | Filter,fluid |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| First Intake Nominal Thread Size | 0.250 INCHES IN |
| First Intake Thread Series Designator | NPT |
| Design Type | REUSABLE |
| First Intake Thread Direction | RIGHT-HAND |
| First Intake Connection Type | THREADED INTERNAL PIPE LINE |
| Filtering Element Quantity | 1 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| 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 |
|---|---|
| 8-4F4-40 | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| B-4F4-40 | 3/9 Design control — primary reference Nupro Co |
NSN 1650-01-556-4384 is a Filter,fluid, manufactured by Swagelok Co, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-556-4384 has 1 manufacturer part number on file: 8-4F4-40 (Swagelok Co).
Key specifications for 8-4F4-40: First Intake Nominal Thread Size: 0.250 INCHES IN; First Intake Thread Series Designator: NPT; Design Type: REUSABLE; First Intake Thread Direction: RIGHT-HAND. 9 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.