The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-033-6461, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-033-6461 |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 18.000 INCHES IN |
| Design Type | CORRUGATED ELEMENT |
| Equalization Characteristic | NONEQUALIZING |
| End Connection Type | FLANGED |
| Criticality Code Justification | FEAT |
| Traverse Maximum Length | 3.000 INCHES IN |
| Bolt Hole Diameter | 0.531 INCHES NOMINAL IN |
| Working Pressure Rating | 1.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Bolt Hole Quantity | 12 |
| Bolt Circle Diameter | 20.500 INCHES NOMINAL IN |
| Test Data Document | 81349-MIL-S-901 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 304 FLANGE |
| Joint Type | DOUBLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 104D109 | 3/2 Design control — primary reference U.S. Government activity |
| A3039B-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-033-6461 is a Expansion Joint,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-033-6461: Nominal Pipe Size Designation: 18.000 INCHES IN; Design Type: CORRUGATED ELEMENT; Equalization Characteristic: NONEQUALIZING; End Connection Type: FLANGED. 13 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.