The Tube Assembly,metal, cataloged under National Stock Number 4710-00-421-7166, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4710-00-421-7166 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Status | ACTIVE |
| Design Form | STRAIGHT |
| Mating End Quantity | 1 SECOND END |
| Mating End Quantity | 1 FIRST END |
| Wall Thickness | 0.094 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 2.625 INCHES SECOND END IN |
| Nominal Thread Size | 2.625 INCHES FIRST END IN |
| End Connection Style | PLAIN SECOND END |
| End Connection Style | SWIVEL NUT, GASKET SEAL FIRST END |
| Tube Outside Diameter | 2.188 INCHES NOMINAL IN |
| Material | STEEL FIRST END |
| Material | STEEL TUBING |
| Material | STEEL SECOND END |
| Thread Series Designator | UNS FIRST END |
| Thread Series Designator | UNS 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 |
|---|---|
| 3350490 | 5/2 Secondary reference U.S. Government activity |
| 3351254 | 3/2 Design control — primary reference U.S. Government activity |
| FC261-1AR | 5/9 Secondary reference U.S. Government activity |
NSN 4710-00-421-7166 is a Tube Assembly,metal, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
Key specifications for 4710-00-421-7166: Design Form: STRAIGHT; Mating End Quantity: 1 SECOND END; Mating End Quantity: 1 FIRST END; Overall Length: 13.000 INCHES NOMINAL IN. 16 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.