The Tube,structural, cataloged under National Stock Number 4710-01-666-5657, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4710-01-666-5657 |
| Item Name | Tube,structural |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Status | ACTIVE |
| Overall Diameter | 0.1875 INCHES NOMINAL IN |
| Reference Data and Literature | KS1F-16C-4-21 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 16Y431-21-21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4710-01-666-5657 is a Tube,structural, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
Key specifications for 4710-01-666-5657: Overall Diameter: 0.1875 INCHES NOMINAL IN; Reference Data and Literature: KS1F-16C-4-21; Overall Length: 12.0 INCHES NOMINAL IN; Special Features: SPEC MIL-T-7081-T4 OR MIL-T-7081-T6. 2 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.
NSN 4710-01-666-5657 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.