The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-171-5188, 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 Ashcroft Inc Dba Heise. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-171-5188 |
| Primary Part Number | VDD895 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Length | 0.250 INCHES NOMINAL IN |
| Thread Provision | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | PLATE |
| Outside Diameter | 7.562 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Orifice Diameter | 1.375 INCHES NOMINAL 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 |
|---|---|
| VDD895 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| 5VXZ72PIECE37 | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 5VXZ72 | D/9 Drawing number reference only Ashcroft Inc Dba Heise |
NSN 4730-01-171-5188 is a Restrictor,fluid Flow, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-171-5188 has 2 manufacturer part numbers on file: VDD895 (Ashcroft Inc Dba Heise), 5VXZ72PIECE37 (Ashcroft Inc Dba Heise).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-174-5937, 4820-01-181-8515. Verify interchangeability with system specifications before substitution.
Key specifications for VDD895: Length: 0.250 INCHES NOMINAL IN; Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: PLATE; Outside Diameter: 7.562 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.