The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-497-5518, 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 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-497-5518 |
| Primary Part Number | 801-6640811 PC 154-1 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 13.875 INCHES NOMINAL IN |
| Thread Provision | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR |
| Material | COPPER ALLOY 706 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 801-6640811 PC 154-1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 801-6640811 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2633-561-01 PC 154-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-497-5518 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 4730-01-497-5518 has 1 manufacturer part number on file: 801-6640811 PC 154-1 (Naval Sea Systems Command).
Key specifications for 801-6640811 PC 154-1: Length: 13.875 INCHES NOMINAL IN; Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR; Special Features: ITEM CONSISTS OF NO. 133, RING-INNER SPACER, 22 MAX; NO. 134, RING-OUTER SPACER, 29 MAX; NO. 154-1, CASCADE PLATE, 22 MAX; NO. 154-A, POSITIONING ROD CONT THD .375-16UNC-2A X 13.88 LG, 1 EA; NO. 154-B, NUT SLFLKG HEX .375-16UNC-3B, 2 EA A. 4 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.
NSN 4730-01-497-5518 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.