The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-020-2743, 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 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-020-2743 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flow Rate and Fluid Type | 1.5 GALLONS PER MINUTE OIL |
| Pressure Rating | 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Strainer Type and Quantity | 1 SCREEN |
| Design Type | STRAIGHT |
| Thread Series | UNF LOCATION NOT OTHERWISE SPECIFIED |
| End Connection Type | ANY ACCEPTABLE SECOND CONNECTION |
| End Connection Type | THREADED MALE FIRST CONNECTION |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE SCREENING |
| Material Document and Classification | QQ-S-763 CL 347 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 0.250 INCHES NOMINAL IN |
| Valve Size | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | 1/4-28 LOCATION NOT OTHERWISE SPECIFIED |
| Operating Temp Range | +70.0 TO 90.0 FAHRENHEIT DEGF |
| Thread Class | 3A LOCATION NOT OTHERWISE SPECIFIED A |
| Material | STEEL COMP 347 BODY |
| Material | STEEL COMP 316 SCREENING |
| 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 |
|---|---|
| 896420-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-020-2743 is a Restrictor Unit,fluid Flow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-020-2743: Flow Rate and Fluid Type: 1.5 GALLONS PER MINUTE OIL; Pressure Rating: 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Strainer Type and Quantity: 1 SCREEN; Design Type: STRAIGHT. 18 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.