The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-00-028-1190, 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. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-028-1190 |
| Primary Part Number | 177586-110 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| End Connection Component Type and Size for Which Designed | 0.250 IN. OD TUBE IN |
| Design Type | STRAIGHT |
| Thread Series | UNF LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 0.609 INCHES NOMINAL IN |
| Valve Size | 0.437 INCHES IN |
| Thread Size Designator | 0.437-20 LOCATION NOT OTHERWISE SPECIFIED |
| Thread Class | 2B LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL BODY |
| Material | RUBBER SYNTHETIC PACKING |
| Material | STEEL FILTER |
| Orifice Diameter | 0.140 INCHES NOMINAL IN |
| End Connection Similarity | IDENTICAL |
| 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 |
|---|---|
| 177586-110 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 4730-00-028-1190 is a Restrictor Unit,fluid Flow, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-028-1190 has 1 manufacturer part number on file: 177586-110 (Northrop Grumman Systems Corporation).
Key specifications for 177586-110: Width Across Flats: 0.625 INCHES NOMINAL IN; End Connection Component Type and Size for Which Designed: 0.250 IN. OD TUBE IN; Design Type: STRAIGHT; Thread Series: UNF LOCATION NOT OTHERWISE SPECIFIED. 13 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.