The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-706-5403, 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. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-706-5403 |
| Primary Part Number | 801-7549599-ASSY-125-4 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 801-7549599-ASSY-125-4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H645-9020 ITEM F500-2 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 514-8891663 ITEM F500-2 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| H645-9020 | D/9 Drawing number reference only U.S. Government activity |
| 8891663 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2633-561-02 | D/9 Drawing number reference only U.S. Government activity |
| 2633-561-02-ASSY-125-4 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 7549599 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-706-5403 is a Restrictor Unit,fluid Flow, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-706-5403 has 1 manufacturer part number on file: 801-7549599-ASSY-125-4 (Naval Sea Systems Command).
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.