The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-128-5910, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-128-5910 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Pressure Rating | 4500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Strainer Type and Quantity | 1 SCREEN |
| Design Type | STRAIGHT |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) ALL CONNECTIONS |
| End Connection Type | THREADED MALE SECOND CONNECTION |
| End Connection Type | UNTHREADED FEMALE FIRST CONNECTION |
| Material Document and Classification | QQ-S-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 0.187 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | -40 LOCATION NOT OTHERWISE SPECIFIED |
| Thread Class | 2A LOCATION NOT OTHERWISE SPECIFIED A |
| Material | STEEL CORROSION RESISTING SCREENING |
| Material | STEEL COMP 303 BODY |
| Orifice Diameter | 0.150 INCHES NOMINAL IN |
| End Connection Similarity | NOT IDENTICAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 10108633 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 0711322-131 | 5/2 Secondary reference U.S. Government activity |
| JETA1875380D | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-128-5910 is a Restrictor Unit,fluid Flow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-128-5910: Pressure Rating: 4500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Strainer Type and Quantity: 1 SCREEN; Design Type: STRAIGHT; Thread Series: UNIFIED NATIONAL COARSE (UNC) ALL CONNECTIONS. 15 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.