The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-536-4191, 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 Proco Products, Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-536-4191 |
| Primary Part Number | 242-A, 4IN NEOPRENE |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Proco Products, Inc |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 4.000 INCHES IN |
| End Connection Type | FLANGED |
| Working Pressure Rating | 135.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 242-A, 4IN NEOPRENE PRIMARY | Proco Products, Inc (USA) |
| Reference | Meaning |
|---|---|
| E612 4IN NEOPRENE | 5/9 Secondary reference U.S. Government activity |
| E612 4IN | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-536-4191 is a Expansion Joint,pipe, manufactured by Proco Products, Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-536-4191 has 1 manufacturer part number on file: 242-A, 4IN NEOPRENE (Proco Products, Inc).
Key specifications for 242-A, 4IN NEOPRENE: Nominal Pipe Size Designation: 4.000 INCHES IN; End Connection Type: FLANGED; Working Pressure Rating: 135.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Special Features: MAXIMUM TEMPERATURE 225 DEGREES F. 4 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.