The Cross,pipe, cataloged under National Stock Number 4730-00-255-8263, 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 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-255-8263 |
| Item Name | Cross,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 3.000 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 3.000 INCHES FIRST END IN |
| Nominal Pipe Size Accommodated | 3.000 INCHES THIRD END IN |
| Surface Treatment Document and Classification | QQ-Z-325,TY 1 FED SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Surface Treatment Document and Classification | QQ-Z-325,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL PIPE THIRD END |
| Connection Type | THREADED INTERNAL PIPE FOURTH END |
| Material Document and Classification | ASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 3.080 INCHES NOMINAL FIRST END IN |
| Leg Length | 3.080 INCHES NOMINAL SECOND END IN |
| Leg Length | 3.080 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 3.000 INCHES SECOND END IN |
| Nominal Thread Size | 3.000 INCHES FIRST END IN |
| Nominal Thread Size | 3.000 INCHES THIRD END IN |
| Maximum Operating Temp | 260.0 CELSIUS FIRST RESPONSE DEGC |
| Maximum Operating Temp | 65.6 CELSIUS SECOND RESPONSE DEGC |
| Nondefinitive Spec/std Data | 2 TYPE |
| Surface Treatment | ZINC INSIDE |
| Surface Treatment | ZINC OUTSIDE |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Unable to Decode | UNABLE TO DECODEUNABLE TO DECODE |
| Material | IRON OVERALL |
| Thread Series Designator | NPT THIRD END |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| WWP521 | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-255-8263 is a Cross,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-255-8263: Nominal Pipe Size Accommodated: 3.000 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 3.000 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 3.000 INCHES THIRD END IN; Surface Treatment Document and Classification: QQ-Z-325,TY 1 FED SPEC SINGLE TREATMENT RESPONSE INSIDE. 30 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.