The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-497-5467, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-497-5467 |
| Primary Part Number | 801-6640811 ASSY 128-1-18 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 20.000 INCHES NOMINAL IN |
| Thread Provision | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR |
| Material | COPPER ALLOY 706 |
| 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 |
|---|---|
| 801-6640811 ASSY 128-1-18 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2633-561-01 ASSY 128-1-18 | 5/2 Secondary reference U.S. Government activity |
| 801-6640811 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-497-5467 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 4730-01-497-5467 has 1 manufacturer part number on file: 801-6640811 ASSY 128-1-18 (Naval Sea Systems Command).
Key specifications for 801-6640811 ASSY 128-1-18: Length: 20.000 INCHES NOMINAL IN; Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR; Special Features: ASSY CONSIST OF: NO. 129, BODY WELDMENT ASSY, 1 EA; NO. 148, RETAINING RING ASSY, 1 EA; NO. 132, CASCADE PLATE CARTRIDGE, 1 EA; NO. 128-2, LABEL PLATE, 1 EA., NO. 128-A, PLUG MS18229-4NCLY, 2 EA; NO. 128-B, O-RING M83248/2-904, 2 EA; NO. 128-C, LOCKWIRE, AR; NO. 128-D, SLEEVE, SWAGING, WR. 063 SIZE, 4 EA; NO. 128-E, WIRE ROPE, AR; NO. 128-K, FLOW BALANCE KIT, 1 EA; 3.00 NPS, 275 PSI WP MAX, 450 DEG F MAX DEGF. 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.
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.