The Tube and Fittings,metallic, cataloged under National Stock Number 4710-01-445-5709, 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 Defense. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4710-01-445-5709 |
| Primary Part Number | 68A552126-1001 |
| Item Name | Tube and Fittings,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Design Form | STRAIGHT |
| Mating End Quantity | 1 SECOND END |
| Mating End Quantity | 1 FIRST END |
| Bolt Hole Diameter | 0.164 INCHES NOMINAL SECOND END IN |
| Material Document and Classification | WW-T-700/6, ALLOY 6061, T6, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE TUBING |
| Material Document and Classification | QQ-A-250/11, ALLOY 6061, T6 FED SPEC 1ST MATERIAL RESPONSE SECOND END |
| Wall Thickness | 0.049 INCHES NOMINAL IN |
| End Connection Style | PLAIN SECOND END |
| End Connection Style | UNTHREADED INTERNAL FIRST END |
| Tube Outside Diameter | 2.000 INCHES NOMINAL IN |
| Bolt Hole Quantity | 15 FIRST END |
| Bolt Circle Diameter | 0.750 INCHES NOMINAL SECOND END IN |
| Material | ALUMINUM ALLOY 6061 TUBING |
| Material | ALUMINUM ALLOY 6061 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 |
| Part Number | Manufacturer |
|---|---|
| 68A552126-1001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 68A552126-1001 | 5/9 Secondary reference U.S. Government activity |
| 68A552126 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4710-01-445-5709 is a Tube and Fittings,metallic, manufactured by The Boeing Company Div Defense, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-445-5709 has 1 manufacturer part number on file: 68A552126-1001 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 4710-01-445-5720. Verify interchangeability with system specifications before substitution.
Key specifications for 68A552126-1001: Design Form: STRAIGHT; Mating End Quantity: 1 SECOND END; Mating End Quantity: 1 FIRST END; Bolt Hole Diameter: 0.164 INCHES NOMINAL SECOND END IN. 14 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.