The Tube Assembly,metal, cataloged under National Stock Number 4710-00-320-3351, 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 Astro Machine Co Inc Div Astro Machine Company. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4710-00-320-3351 |
| Primary Part Number | 3320580 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Astro Machine Co Inc Div Astro Machine Company |
| Status | ACTIVE |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Bolt Hole Diameter | 0.140 INCHES MINIMUM AND 0.146 INCHES MAXIMUM SINGLE END IN |
| Wall Thickness | 0.016 INCHES NOMINAL IN |
| Tube Outside Diameter | 0.250 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 SINGLE END |
| Material | STEEL CORROSION RESISTING SINGLE END |
| Material | STEEL CORROSION RESISTING TUBING |
| 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 |
|---|---|
| 3320580 PRIMARY | Astro Machine Co Inc Div Astro Machine Company (USA) |
| Reference | Meaning |
|---|---|
| 3320580 | 5/2 Secondary reference U.S. Government activity |
NSN 4710-00-320-3351 is a Tube Assembly,metal, manufactured by Astro Machine Co Inc Div Astro Machine Company, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-320-3351 has 1 manufacturer part number on file: 3320580 (Astro Machine Co Inc Div Astro Machine Company).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-601-8177. Verify interchangeability with system specifications before substitution.
Key specifications for 3320580: Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Bolt Hole Diameter: 0.140 INCHES MINIMUM AND 0.146 INCHES MAXIMUM SINGLE END IN; Wall Thickness: 0.016 INCHES NOMINAL IN. 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.