The Tube Assembly,metal, cataloged under National Stock Number 4710-01-256-3530, 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. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-256-3530 |
| Primary Part Number | 7-217221635 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Wall Thickness | 0.020 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SINGLE END |
| Nominal Thread Size | 0.562 INCHES SINGLE END IN |
| End Connection Style | SWIVEL NUT, FLARELESS SINGLE END |
| Tube Outside Diameter | 0.375 INCHES NOMINAL IN |
| Thread Class | 3B SINGLE END |
| Material | STEEL CORROSION RESISTING SINGLE END |
| Material | STEEL CORROSION RESISTING TUBING |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SINGLE END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7-217221635 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-217221635 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 4710-01-256-3530 is a Tube Assembly,metal, manufactured by The Boeing Company, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-256-3530 has 1 manufacturer part number on file: 7-217221635 (The Boeing Company).
Key specifications for 7-217221635: Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Wall Thickness: 0.020 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND SINGLE END. 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.
NSN 4710-01-256-3530 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.