The Tube,metallic, cataloged under National Stock Number 4710-01-274-1809, 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 The Boeing Company Div Legacy Am&m. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4710-01-274-1809 |
| Primary Part Number | ST0170LB00170.625OD0.023WALL |
| Item Name | Tube,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Measuring Method and Length | 144.000 INCHES NOMINAL RANDOM IN |
| First End Style | PLAIN |
| Heat Treatment | COLD WORKED AND STRESS RELIEVED |
| Material Document and Classification | MCDONNELL DOUGLAS CORP, 3AL-2.5V MFR REF SINGLE MATERIAL RESPONSE V |
| Diameter | 0.625 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.023 INCHES NOMINAL IN |
| Second End Relationship with First End | IDENTICAL |
| Specification/standard Data | 43999-ST0170LB0017 MANUFACTURERS SPECIFICATION |
| Material | TITANIUM 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 |
|---|---|
| ST0170LB00170.625OD0.023WALL PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| AMS4945 0.625OD 0.023WALL PRIMARY | Haynes International, Inc Div Haynes International (USA) |
| AMS4945 0.625OD 0.023WALL PRIMARY | Alleima Special Metals Llc (USA) |
| Reference | Meaning |
|---|---|
| ST0170LB0017 | 3/1 Design control — primary reference U.S. Government activity |
| ST0170LB0017 | 5/9 Secondary reference Ancotech Inc |
| 3AL-2.5VTI/0.625OD0.023GA | 5/9 Secondary reference Westinghouse Electric Corp Specialty Metals Div |
| ST0170LB0017 | 3/1 Design control — primary reference Alleima Special Metals Llc |
NSN 4710-01-274-1809 is a Tube,metallic, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-274-1809 has 3 manufacturer part numbers on file: ST0170LB00170.625OD0.023WALL (The Boeing Company Div Legacy Am&m), AMS4945 0.625OD 0.023WALL (Haynes International, Inc Div Haynes International), AMS4945 0.625OD 0.023WALL (Alleima Special Metals Llc).
1 possible match (shared part number, not a government interchangeability claim): 4710-01-274-1810. Verify interchangeability with system specifications before substitution.
Key specifications for ST0170LB00170.625OD0.023WALL: Measuring Method and Length: 144.000 INCHES NOMINAL RANDOM IN; First End Style: PLAIN; Heat Treatment: COLD WORKED AND STRESS RELIEVED; Material Document and Classification: MCDONNELL DOUGLAS CORP, 3AL-2.5V MFR REF SINGLE MATERIAL RESPONSE V. 11 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.