The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-440-6712, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-440-6712 |
| Primary Part Number | GR524L3 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Strainer Type and Quantity | 1 SCREEN |
| Design Type | ANGULAR |
| Thread Series | UNF LOCATION NOT OTHERWISE SPECIFIED |
| End Connection Type | THREADED MALE TUBE LOCATION NOT OTHERWISE SPECIFIED |
| Valve Size | 0.250 INCHES IN |
| Leg Length | 0.656 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | 7/16-20 LOCATION NOT OTHERWISE SPECIFIED |
| Operating Temp Range | -54.0 TO 177.0 CELSIUS DEGC |
| Thread Class | 3A LOCATION NOT OTHERWISE SPECIFIED A |
| Material | STEEL CORROSION RESISTING SCREENING |
| Material | STEEL CORROSION RESISTING BODY |
| Orifice Diameter | 0.003 INCHES NOMINAL IN |
| Angle in Deg | 90.0 |
| End Connection Similarity | IDENTICAL |
| 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 |
|---|---|
| GR524L3 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| VDCX0510450B | 3/2 Design control — primary reference U.S. Government activity |
| GR524L | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4730-01-440-6712 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 4730-01-440-6712 has 1 manufacturer part number on file: GR524L3 (Northrop Grumman Systems Corporation).
Key specifications for GR524L3: Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Strainer Type and Quantity: 1 SCREEN; Design Type: ANGULAR; Thread Series: UNF LOCATION NOT OTHERWISE SPECIFIED. 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.
NSN 4730-01-440-6712 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.