The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-161-6671, 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 The Boeing Company Div Defense. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-161-6671 |
| Primary Part Number | 74A831194-2001 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Length | 1.250 INCHES NOMINAL IN |
| Thread Provision | THREADED FIRST PROVISION |
| Thread Provision | THREADED SECOND PROVISION |
| Design Type | TUBULAR, HEX SHAPE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST PROVISION |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND PROVISION |
| Outside Diameter | 0.438 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST PROVISION |
| Thread Direction | RIGHT-HAND SECOND PROVISION |
| Thread Size Designator | 0.438-20 FIRST PROVISION |
| Thread Size Designator | 0.438-20 SECOND PROVISION |
| Thread Class | 3A SECOND PROVISION A |
| Thread Class | 3A FIRST PROVISION A |
| Material | ALUMINUM ALLOY |
| Orifice Diameter | 0.055 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 |
|---|---|
| 74A831194-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10108829 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A831194-2001 | 5/9 Secondary reference Br Machine Parts Inc |
| 74A831194 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-161-6671 is a Restrictor,fluid Flow, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-161-6671 has 1 manufacturer part number on file: 74A831194-2001 (The Boeing Company Div Defense).
Key specifications for 74A831194-2001: Length: 1.250 INCHES NOMINAL IN; Thread Provision: THREADED FIRST PROVISION; Thread Provision: THREADED SECOND PROVISION; Design Type: TUBULAR, HEX SHAPE. 15 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.