The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-00-248-6729, 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 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-248-6729 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 0.688 INCHES NOMINAL IN |
| Strainer Type and Quantity | 2 SCREEN |
| End Connection Component Type and Size for Which Designed | 0.250 IN.OD TUBE IN |
| Design Type | STRAIGHT |
| Thread Series | UNF ALL CONNECTIONS |
| End Connection Type | THREADED MALE, FLARELESS TUBE ALL CONNECTIONS |
| Material Document and Classification | QQ-S-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 304 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30304 ASSN STD SINGLE MATERIAL RESPONSE SCREENING |
| Valve Size | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND ALL CONNECTIONS |
| Thread Size Designator | 0.438-20 ALL CONNECTIONS |
| Thread Class | 3A ALL CONNECTIONS A |
| Material | STEEL COMP 303 BODY |
| Material | STEEL COMP 304 SCREENING |
| Orifice Diameter | 0.094 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 |
| Reference | Meaning |
|---|---|
| EX38905 | 3/2 Design control — primary reference U.S. Government activity |
| LN5441-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| JEFX0389050A | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-248-6729 is a Restrictor Unit,fluid Flow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-248-6729: Width Across Flats: 0.688 INCHES NOMINAL IN; Strainer Type and Quantity: 2 SCREEN; End Connection Component Type and Size for Which Designed: 0.250 IN.OD TUBE IN; Design Type: STRAIGHT. 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.
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.