The Cross,tube, cataloged under National Stock Number 4730-01-675-8318, 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 27 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-675-8318 |
| Item Name | Cross,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS-2472 NATIONAL STD/SPEC 1ST TREATMENT RESPONSE OR MIL-A-8525 MIL SPEC 1ST TREATMENT RESPONSE AND FED-STD-595 FED STD 2ND TREATMENT RESPONSE OVERALL |
| Connection Style | FLARED (TUBE) ALL ENDSUNABLE TO DECODE |
| Connection Type | THREADED EXTERNAL TUBE FIRST ENDUNABLE TO DECODE |
| Connection Type | THREADED EXTERNAL TUBE FOURTH END BULKHEADUNABLE TO DECODE |
| Connection Type | THREADED EXTERNAL TUBE SECOND ENDUNABLE TO DECODE |
| Connection Type | THREADED EXTERNAL TUBE THIRD ENDUNABLE TO DECODE |
| Material Document and Classification | UNABLE TO DECODE |
| Material Document and Classification | AMS-QQ-A-250/12 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES THIRD END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES FOURTH END BULKHEAD IN |
| Nominal Outside Diameter Tube Accommodated | UNABLE TO DECODE |
| Nominal Thread Size | 0.7500 INCHES FIRST ENDUNABLE TO DECODE IN |
| Nominal Thread Size | 0.7500 INCHES SECOND ENDUNABLE TO DECODE IN |
| Nominal Thread Size | 0.8750 INCHES FOURTH END BULKHEADUNABLE TO DECODE IN |
| Nominal Thread Size | 0.8750 INCHES THIRD ENDUNABLE TO DECODE IN |
| Seat Angle | 37.0 DEGREES ALL ENDSUNABLE TO DECODE |
| Surface Treatment | ANODIZE AND PAINT OVERALL |
| Thread Class | 3A ALL ENDSUNABLE TO DECODE A |
| Thread Quantity Per Inch | 14 FOURTH END BULKHEADUNABLE TO DECODE |
| Thread Quantity Per Inch | 14 THIRD ENDUNABLE TO DECODE |
| Thread Quantity Per Inch | 16 FIRST ENDUNABLE TO DECODE |
| Thread Quantity Per Inch | 16 SECOND ENDUNABLE TO DECODE |
| Material | UNABLE TO DECODE |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Thread Series Designator | UNABLE TO DECODE |
| 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 |
|---|---|
| 520-18211-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-675-8318 is a Cross,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-675-8318: Surface Treatment Document and Classification: AMS-2472 NATIONAL STD/SPEC 1ST TREATMENT RESPONSE OR MIL-A-8525 MIL SPEC 1ST TREATMENT RESPONSE AND FED-STD-595 FED STD 2ND TREATMENT RESPONSE OVERALL; Connection Style: FLARED (TUBE) ALL ENDSUNABLE TO DECODE; Connection Type: THREADED EXTERNAL TUBE FIRST ENDUNABLE TO DECODE; Connection Type: THREADED EXTERNAL TUBE FOURTH END BULKHEADUNABLE TO DECODE. 27 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.