The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-357-6374, 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 Holz Rubber Co, Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-357-6374 |
| Primary Part Number | 300-3/333X4X12 |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Holz Rubber Co, Inc |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 4.000 INCHES IN |
| Design Type | SPOOL |
| End Connection Type | FLANGED |
| Traverse Maximum Length | 0.750 INCHES IN |
| Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| Working Pressure Rating | 165.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 7.500 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC FLANGE |
| Joint Type | SINGLE |
| 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 |
|---|---|
| 300-3/333X4X12 PRIMARY | Holz Rubber Co, Inc (USA) |
| Reference | Meaning |
|---|---|
| 4X12SAFEFLEX24 | 5/9 Secondary reference Mid-Atlantic Technical Services Inc |
NSN 4730-01-357-6374 is a Expansion Joint,pipe, manufactured by Holz Rubber Co, Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-357-6374 has 1 manufacturer part number on file: 300-3/333X4X12 (Holz Rubber Co, Inc).
Key specifications for 300-3/333X4X12: Nominal Pipe Size Designation: 4.000 INCHES IN; Design Type: SPOOL; End Connection Type: FLANGED; Traverse Maximum Length: 0.750 INCHES IN. 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.