The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-454-0089, 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 Kadant Unaflex Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-454-0089 |
| Primary Part Number | 800-USA-4M |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Kadant Unaflex Llc |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 4.000 INCHES IN |
| Design Type | SPOOL |
| End Connection Type | FLANGED |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 7.500 INCHES NOMINAL IN |
| Material | STEEL FLANGE |
| Joint Type | DOUBLE |
| Flange Outside Diameter | 9.000 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 |
| Part Number | Manufacturer |
|---|---|
| 800-USA-4M | Unaflex, Inc. (USA) |
| 3258421-5 | Naval Sea Systems Command (USA) |
| 800-USA-4M PRIMARY | Kadant Unaflex Llc (USA) |
| Reference | Meaning |
|---|---|
| 800-USA-4M | 5/9 Secondary reference Unaflex Inc. |
| MSOD0400 | 5/9 Secondary reference Metraflex Company the |
| 3258421-5 | 5/9 Secondary reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 3258421 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| MSODTC0400 | 5/9 Secondary reference Metraflex Company the |
NSN 4730-01-454-0089 is a Expansion Joint,pipe, manufactured by Kadant Unaflex Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-454-0089 has 3 manufacturer part numbers on file: 800-USA-4M (Unaflex, Inc.), 3258421-5 (Naval Sea Systems Command), 800-USA-4M (Kadant Unaflex Llc).
Key specifications for 800-USA-4M: Nominal Pipe Size Designation: 4.000 INCHES IN; Design Type: SPOOL; End Connection Type: FLANGED; Overall Length: 5.380 INCHES NOMINAL IN. 8 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.