The Restrictor,fluid Flow, cataloged under National Stock Number 4730-00-326-0032, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-326-0032 |
| Primary Part Number | 177586-155 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| FSC Application Data | HYDRAULIC SYSTEM,AIRCRAFT |
| Length | 3.937 INCHES NOMINAL IN |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR |
| Thread Series | UNF FIRST PROVISION |
| Thread Length | 0.625 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Hose/tube Size for Which Designed | W/1/4 IN. OD TUBE IN |
| Outside Diameter | 0.720 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | 7/16 LOCATION NOT OTHERWISE SPECIFIED |
| Thread Class | B3 LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL CORROSION RESISTING |
| Orifice Diameter | 0.155 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 177586-155 | Saf Industries Llc Dba Saf Industries Llc Div Garkenyon (USA) |
| 177586-155 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 177586-155 | 5/9 Secondary reference New Haven Mfg Corp Stromberg Products Div P O Box 559 Naugatuck Ct 06770-0559 |
NSN 4730-00-326-0032 is a Restrictor,fluid Flow, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-326-0032 has 2 manufacturer part numbers on file: 177586-155 (Saf Industries Llc Dba Saf Industries Llc Div Garkenyon), 177586-155 (Northrop Grumman Systems Corporation).
Key specifications for 177586-155: FSC Application Data: HYDRAULIC SYSTEM,AIRCRAFT; Length: 3.937 INCHES NOMINAL IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR. 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.
NSN 4730-00-326-0032 has DEMIL Code Q. 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.