The Fuse,hydraulic System, cataloged under National Stock Number 1650-00-655-8170, 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 Northrop Grumman Systems Corporation. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-655-8170 |
| Primary Part Number | 57F903518 |
| Item Name | Fuse,hydraulic System |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Tube Accommodation Outside Diameter | 0.500 INCHES NOMINAL IN |
| FSC Application Data | HYDRAULIC SYSTEM AIRCRAFT |
| Pressure Rating | 3000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Connection Thread Size | 0.750-16 |
| Connection Port Quantity | 2 |
| Reset Button | NOT INCLUDED |
| Overall Diameter | 1.380 INCHES NOMINAL IN |
| Port Connection Type | GASKET SEAL FEMALE |
| Cubic Capacity | 160.000 CUBIC INCHES |
| Setting Lever | NOT INCLUDED |
| Connection Facility Thread Class | 3 |
| Operating Temp Range | -54.0 TO 135.0 FAHRENHEIT DEGF |
| Connection Facility Thread Direction | RIGHT-HAND |
| Material | ALUMINUM ALLOY BODY |
| Connection Facility Screw Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 57F903518 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 57F903518-9 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| 1113F8-160 | 3/2 Design control — primary reference U.S. Government activity |
| 1113F8-160 | 5/9 Secondary reference U.S. Government activity |
NSN 1650-00-655-8170 is a Fuse,hydraulic System, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-655-8170 has 1 manufacturer part number on file: 57F903518 (Northrop Grumman Systems Corporation).
Key specifications for 57F903518: Tube Accommodation Outside Diameter: 0.500 INCHES NOMINAL IN; FSC Application Data: HYDRAULIC SYSTEM AIRCRAFT; Pressure Rating: 3000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Connection Thread Size: 0.750-16. 15 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 1650-00-655-8170 has DEMIL Code B. 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.