The Tube,metallic, cataloged under National Stock Number 4710-01-221-5501, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Enerquip, Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-221-5501 |
| Primary Part Number | 3-213,642 |
| Item Name | Tube,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Enerquip, Llc |
| Status | ACTIVE |
| Measuring Method and Length | 39.000 INCHES NOMINAL SPECIFIC IN |
| First End Style | PLAIN |
| Diameter | 0.375 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.0359 INCHES NOMINAL IN |
| Second End Relationship with First End | IDENTICAL |
| Material | COPPER ALLOY |
| Construction | SEAMLESS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3-213,642 PRIMARY | Enerquip, Llc (USA) |
| 3-213,709 ITEM 1 | Enerquip, Llc (USA) |
| Reference | Meaning |
|---|---|
| 3-213,709 | D/9 Drawing number reference only Enerquip, Llc |
NSN 4710-01-221-5501 is a Tube,metallic, manufactured by Enerquip, Llc, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-221-5501 has 2 manufacturer part numbers on file: 3-213,642 (Enerquip, Llc), 3-213,709 ITEM 1 (Enerquip, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4420-01-221-5726. Verify interchangeability with system specifications before substitution.
Key specifications for 3-213,642: Measuring Method and Length: 39.000 INCHES NOMINAL SPECIFIC IN; First End Style: PLAIN; Diameter: 0.375 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN ROUND. 8 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.