The Tube,metallic, cataloged under National Stock Number 4710-01-121-0639, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4710-01-121-0639 |
| Item Name | Tube,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 18.000 INCHES NOMINAL STANDARD IN |
| First End Style | THREADED EXTERNAL |
| First End Thread Series | NPT |
| Material Document and Classification | QQ-N-281, CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 1.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.020 INCHES NOMINAL IN |
| Second End Relationship with First End | IDENTICAL |
| Maximum Operating Temp | 100.0 FAHRENHEIT DEGF |
| Welding Method | FURNACE LAP |
| Material | NICKEL ALLOY |
| First End Nominal Thread Size | 1.500 INCHES IN |
| Construction | HELICAL SEAMED |
| 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 |
|---|---|
| 53-6956-FLX-1-1/2 IN. | 3/2 Design control — primary reference U.S. Government activity |
NSN 4710-01-121-0639 is a Tube,metallic, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
Key specifications for 4710-01-121-0639: Measuring Method and Length: 18.000 INCHES NOMINAL STANDARD IN; First End Style: THREADED EXTERNAL; First End Thread Series: NPT; Material Document and Classification: QQ-N-281, CLASS A FED SPEC SINGLE MATERIAL RESPONSE. 13 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.