The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-407-0693, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-407-0693 |
| Primary Part Number | 803-5196808 PC.100-145PSI-50GPM |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Pressure Rating | 145.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| End Connection Component Type and Size for Which Designed | 3 IN. PIPE IN |
| Design Type | STRAIGHT |
| Material | NICKEL ALLOY BODY |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 803-5196808 PC.100-145PSI-50GPM PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-5196808 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-407-0693 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 4730-01-407-0693 has 1 manufacturer part number on file: 803-5196808 PC.100-145PSI-50GPM (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-407-0970, 4730-01-408-4947, 4730-01-487-0338. Verify interchangeability with system specifications before substitution.
Key specifications for 803-5196808 PC.100-145PSI-50GPM: Pressure Rating: 145.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; End Connection Component Type and Size for Which Designed: 3 IN. PIPE IN; Design Type: STRAIGHT; Overall Length: 30.000 INCHES NOMINAL IN. 5 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.