The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-181-1354, 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 Dressta North America Ltd. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-181-1354 |
| Primary Part Number | 687426C1 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Length | 1.094 INCHES NOMINAL IN |
| Thread Provision | THREADED FIRST PROVISION |
| Thread Provision | THREADED SECOND PROVISION |
| Design Type | TUBULAR |
| Thread Series | NPTF FIRST PROVISION |
| Thread Series | UNEF SECOND PROVISION |
| Thread Length | 0.281 INCHES NOMINAL SECOND PROVISION IN |
| Thread Length | 0.594 INCHES NOMINAL FIRST PROVISION IN |
| Hose/tube Size for Which Designed | 0.375 IN. OD TUBE IN |
| Outside Diameter | 0.690 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST PROVISION |
| Thread Direction | RIGHT-HAND SECOND PROVISION |
| Thread Size Designator | 0.250-18 FIRST PROVISION |
| Thread Size Designator | 0.625-24 SECOND PROVISION |
| Thread Class | 2A FIRST PROVISION A |
| Thread Class | 2A SECOND PROVISION A |
| Material | COPPER ALLOY |
| Orifice Diameter | 0.040 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 |
NSN 4730-01-181-1354 is a Restrictor,fluid Flow, manufactured by Dressta North America Ltd, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-181-1354 has 2 manufacturer part numbers on file: 687426C1 (Komatsu America Corp.), 687426C1 (Dressta North America Ltd).
Key specifications for 687426C1: Length: 1.094 INCHES NOMINAL IN; Thread Provision: THREADED FIRST PROVISION; Thread Provision: THREADED SECOND PROVISION; Design Type: TUBULAR. 18 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.