The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-350-6445, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-350-6445 |
| Primary Part Number | 20011-4D-105 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| Status | ACTIVE |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Width Across Flats | 0.688 INCHES NOMINAL IN |
| Strainer Type and Quantity | 1 FILTER |
| Design Type | STRAIGHT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND CONNECTION |
| End Connection Type | FLARE TUBE FIRST CONNECTION |
| End Connection Type | THREADED MALE, GASKET SEAL SECOND CONNECTION |
| Material Document and Classification | AMS-QQ-A-250/4, T3 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Thread Direction | RIGHT-HAND SECOND CONNECTION |
| Thread Size Designator | 0.438 SECOND CONNECTION |
| Thread Class | 3A SECOND CONNECTION A |
| Unable to Decode | UNABLE TO DECODE |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | STEEL CORROSION RESISTING FILTER |
| End Connection Similarity | NOT IDENTICAL |
| Angle Between Connections | 37.0 DEGREES NOMINAL FIRST CONNECTION |
| 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 |
|---|---|
| 334225P01 | Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA) |
| 20011-4D-105 PRIMARY | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA) |
| Reference | Meaning |
|---|---|
| 334225P01 | 5/9 Secondary reference Howden Fluid Systems |
| 334225 | D/9 Drawing number reference only Howden Fluid Systems |
NSN 4730-01-350-6445 is a Restrictor Unit,fluid Flow, manufactured by Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-350-6445 has 2 manufacturer part numbers on file: 334225P01 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), 20011-4D-105 (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div).
Key specifications for 20011-4D-105: Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Width Across Flats: 0.688 INCHES NOMINAL IN; Strainer Type and Quantity: 1 FILTER; Design Type: STRAIGHT. 16 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.