The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-475-8803, 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 Spx Fluid Power. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-475-8803 |
| Primary Part Number | 252953 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Spx Fluid Power |
| Status | ACTIVE |
| Length | 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN |
| Thread Provision | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | CONCAVE DISK |
| Outside Diameter | 0.623 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| Orifice Diameter | 0.560 INCHES MINIMUM AND 0.570 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 |
|---|---|
| 252953 PRIMARY | Spx Fluid Power (USA) |
NSN 4730-01-475-8803 is a Restrictor,fluid Flow, manufactured by Spx Fluid Power, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-475-8803 has 1 manufacturer part number on file: 252953 (Spx Fluid Power).
Key specifications for 252953: Length: 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN; Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: CONCAVE DISK; Outside Diameter: 0.623 INCHES MINIMUM AND 0.625 INCHES MAXIMUM 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.