The Restrictor,fluid Flow, cataloged under National Stock Number 4730-00-972-8401, 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 Brp Us Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-972-8401 |
| Primary Part Number | 553069 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Brp Us Inc |
| Status | ACTIVE |
| Length | 0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Thread Provision | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | PLATE |
| Outside Diameter | 0.421 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Orifice Diameter | 0.043 INCHES MINIMUM AND 0.059 INCHES MAXIMUM 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 |
|---|---|
| 553069 PRIMARY | Brp Us Inc (USA) |
| Reference | Meaning |
|---|---|
| 1118PC187N | 5/9 Secondary reference U.S. Government activity |
| 553069 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
| 553069 | 5/9 Secondary reference Evinrude Motors Product Group of Outboard Marine Corp |
| 553069 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-972-8401 is a Restrictor,fluid Flow, manufactured by Brp Us Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-972-8401 has 1 manufacturer part number on file: 553069 (Brp Us Inc).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-427-5385. Verify interchangeability with system specifications before substitution.
Key specifications for 553069: Length: 0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: PLATE; Outside Diameter: 0.421 INCHES NOMINAL IN. 6 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.