The Tube,metallic, cataloged under National Stock Number 4710-00-503-0873, 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 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-00-503-0873 |
| Primary Part Number | MMS261-0-500-0-020 |
| Item Name | Tube,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Measuring Method and Length | 144.000 INCHES NOMINAL SPECIFIC IN |
| First End Style | PLAIN |
| Material Document and Classification | MIL-T-8808 MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 0.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.020 INCHES NOMINAL IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Specification/standard Data | 81349-MIL-T-8808 GOVERNMENT SPECIFICATION |
| Maximum Operating Temp | 1200.0 FAHRENHEIT DEGF |
| Nondefinitive Spec/std Data | 1 TYPE AND 321 COMPOSITION |
| Second End Outside Diameter | 0.656 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE INSIDE |
| Surface Treatment | PASSIVATE OUTSIDE |
| Second End Style | SINGLE FLARE |
| Material | STEEL COMP 321 |
| 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 |
|---|---|
| MMS261-0-500-0-020 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10110637 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MIL-T-8808 | 4/1 Identification reference U.S. Government activity |
| MMS261-0-500X0-0 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Defense |
| MMS261 | 3/1 Design control — primary reference The Boeing Company Div Defense |
NSN 4710-00-503-0873 is a Tube,metallic, manufactured by The Boeing Company Div Defense, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-503-0873 has 1 manufacturer part number on file: MMS261-0-500-0-020 (The Boeing Company Div Defense).
6 possible matches (shared part number, not a government interchangeability claim): 4710-01-107-9106, 4710-01-107-9107, 4710-01-107-9108. Verify interchangeability with system specifications before substitution.
Key specifications for MMS261-0-500-0-020: Measuring Method and Length: 144.000 INCHES NOMINAL SPECIFIC IN; First End Style: PLAIN; Material Document and Classification: MIL-T-8808 MIL SPEC SINGLE MATERIAL RESPONSE; Diameter: 0.500 INCHES NOMINAL IN. 16 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.