The Flange,pipe,swivel Retaining, cataloged under National Stock Number 4730-01-322-2131, 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 Raytheon Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-322-2131 |
| Primary Part Number | 5543227-001 |
| Item Name | Flange,pipe,swivel Retaining |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| Flange Diameter | 2.800 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Surface Treatment Document and Classification | MIL-A-8625,TY II,CL2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Socket Depth | 0.100 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 1.455 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | ROUND, TWO BOLT HOLE CIRCLES |
| Outer Bolt Circle Hole Diameter | 0.124 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE |
| Inner Bolt Circle Hole Diameter | 0.136 INCHES NOMINAL IN |
| Outer Bolt Circle Hole Quantity | 5 |
| Recess Diameter | 1.455 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Inner Bolt Circle Diameter | 1.190 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Outer Bolt Circle Diameter | 2.560 INCHES NOMINAL IN |
| Inner Bolt Circle Hole Quantity | 4 |
| Thickness | 0.200 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 |
|---|---|
| 5543227-001 | Naval Sea Systems Command (USA) |
| 5543227-001 PRIMARY | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| 5543227 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-322-2131 is a Flange,pipe,swivel Retaining, manufactured by Raytheon Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-322-2131 has 2 manufacturer part numbers on file: 5543227-001 (Naval Sea Systems Command), 5543227-001 (Raytheon Company).
Key specifications for 5543227-001: Flange Diameter: 2.800 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Surface Treatment Document and Classification: MIL-A-8625,TY II,CL2 MIL SPEC SINGLE TREATMENT RESPONSE; Socket Depth: 0.100 INCHES NOMINAL IN. 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.