The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-220-1336, 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 Naval Sea Systems Command. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-220-1336 |
| Primary Part Number | 5188318 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 4.250 INCHES NOMINAL IN |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR, HEX SHAPE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND PROVISION |
| Thread Series | ANPT FIRST PROVISION |
| Thread Length | 0.958 INCHES NOMINAL SECOND PROVISION IN |
| Thread Length | 1.000 INCHES NOMINAL FIRST PROVISION IN |
| Material Document and Classification | MIL-C-15726, COMP 70-30, HARD MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST PROVISION |
| Thread Direction | RIGHT-HAND SECOND PROVISION |
| Thread Size Designator | 1.000-11-1/2 FIRST PROVISION |
| Thread Size Designator | 1.625-12 SECOND PROVISION |
| Thread Class | 3A SECOND PROVISION A |
| Thread Class | 2A FIRST PROVISION A |
| Material | COPPER ALLOY 715 |
| Orifice Diameter | 0.125 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5188318 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4730-01-220-1336 is a Restrictor,fluid Flow, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-220-1336 has 1 manufacturer part number on file: 5188318 (Naval Sea Systems Command).
Key specifications for 5188318: Length: 4.250 INCHES NOMINAL IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR, HEX SHAPE; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF) SECOND PROVISION. 17 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.