The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-045-0011, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-045-0011 |
| Primary Part Number | A51H9078-1 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Length | 1.820 INCHES NOMINAL IN |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR, HEX SHAPE |
| Thread Series | UNF SECOND PROVISION |
| Thread Series | UNF FIRST PROVISION |
| Thread Length | 0.538 INCHES MINIMUM AND 0.548 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| Outside Diameter | 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND FIRST PROVISION |
| Thread Direction | RIGHT-HAND SECOND PROVISION |
| Thread Size Designator | 3/8-24 FIRST PROVISION |
| Thread Size Designator | 3/8-24 SECOND PROVISION |
| Surface Treatment | PASSIVATE |
| Thread Class | 3B FIRST PROVISION |
| Thread Class | 3B SECOND PROVISION |
| Material | STEEL |
| Orifice Diameter | 0.188 INCHES NOMINAL IN |
| 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 |
|---|---|
| A51H9078-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| A51H9078-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 48001-001 | 3/9 Design control — primary reference Cef Industries Inc Environ Div |
| 48001-001 | 5/9 Secondary reference Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
NSN 4730-01-045-0011 is a Restrictor,fluid Flow, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-045-0011 has 1 manufacturer part number on file: A51H9078-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
Key specifications for A51H9078-1: Length: 1.820 INCHES NOMINAL IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR, HEX SHAPE; Thread Series: UNF SECOND PROVISION. 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.