The Filter,fluid, cataloged under National Stock Number 1650-01-022-8787, 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 Pti Technologies Inc.. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1650-01-022-8787 |
| Primary Part Number | 7581991 |
| Item Name | Filter,fluid |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Filtration Rating in Microns | 5.0 ABSOLUTE |
| Distance Between Mounting Hole Centers | 4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN |
| First Intake Nominal Thread Size | 1.312 INCHES IN |
| First Intake Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) |
| Design Type | NONREUSABLE |
| First Intake Thread Direction | RIGHT-HAND |
| Body Width | 5.000 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL TUBE HEAD SIDE |
| First Intake Thread Class | 2A A |
| Mounting Hole Diameter | 0.265 INCHES NOMINAL IN |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Filtering Element Quantity | 1 |
| Body Length | 10.000 INCHES NOMINAL IN |
| Filtering System for Which Designed | BY-PASS FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| First Intake Thread Quantity Per Inch | 12 |
| Mounting Type | UNTHREADED HOLE HEAD |
| 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 |
|---|---|
| 7581991 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 673498-101 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 1650-01-022-8787 is a Filter,fluid, manufactured by Pti Technologies Inc., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-022-8787 has 1 manufacturer part number on file: 7581991 (Pti Technologies Inc.).
Key specifications for 7581991: Mounting Hole Quantity: 2; Filtration Rating in Microns: 5.0 ABSOLUTE; Distance Between Mounting Hole Centers: 4.995 INCHES MINIMUM AND 5.005 INCHES MAXIMUM IN; First Intake Nominal Thread Size: 1.312 INCHES IN. 18 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.