The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-239-6955, 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 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-239-6955 |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 36.000 INCHES IN |
| Design Type | CORRUGATED ELEMENT |
| Equalization Characteristic | SELF-EQUALIZING |
| End Connection Type | FLANGED |
| Bolt Hole Diameter | 1.625 INCHES NOMINAL IN |
| Working Pressure Rating | 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Bolt Hole Quantity | 32 |
| Bolt Circle Diameter | 42.750 INCHES NOMINAL IN |
| Material | STEEL FLANGE |
| Joint Type | SINGLE |
| Flange Outside Diameter | 46.000 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 |
| Reference | Meaning |
|---|---|
| 30990 REV A | C/1 Advisory reference — outside the item-of-supply concept Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc |
| 36SFF5008LCM5 | 3/9 Design control — primary reference Pathway Bellows Inc |
NSN 4730-01-239-6955 is a Expansion Joint,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-239-6955: Nominal Pipe Size Designation: 36.000 INCHES IN; Design Type: CORRUGATED ELEMENT; Equalization Characteristic: SELF-EQUALIZING; End Connection Type: FLANGED. 11 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.