The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-562-8548, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-562-8548 |
| Primary Part Number | 74A831240-2053 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Thread Provision | UNTHREADED FIRST PROVISION |
| Outside Diameter | 2.000 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Orifice Diameter | 0.969 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 |
|---|---|
| 74A831240-2053 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10168209 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4730-01-562-8548 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 4730-01-562-8548 has 1 manufacturer part number on file: 74A831240-2053 (The Boeing Company Div Defense).
Key specifications for 74A831240-2053: Thread Provision: UNTHREADED FIRST PROVISION; Outside Diameter: 2.000 INCHES NOMINAL IN; Special Features: MATERIAL IAW QQ-A-250/8, COMP 5052, COND O.; Part Name Assigned by Controlling Agency: (INAVY)DP RESTRICTOR. 4 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.