The Coupling,pipe, cataloged under National Stock Number 4730-00-595-0678, 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 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-595-0678 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 2.125 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | THREADED INTERNAL |
| Material Document and Classification | ASTM A216 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Surface Treatment | ZINC OVERALL |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Material | STEEL OVERALL |
| Thread Series Designator | NPSC ALL ENDS |
| 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 |
|---|---|
| ASME B16.3 | 5/1 Secondary reference The American Society of Mechanical Engineers |
| MS39233-20 | 2/2 Government specification standardization U.S. Government activity |
| WWP521 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-595-0678 is a Coupling,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-595-0678: Surface Treatment Document and Classification: ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 2.125 INCHES IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 15 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.