The Tube,bent,metallic, cataloged under National Stock Number 4710-01-220-8266, 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 Amec Foster Wheeler North America Corp. Dba Foster Wheeler. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4710-01-220-8266 |
| Primary Part Number | 404-55-1-33 PIECE LR1 |
| Item Name | Tube,bent,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Amec Foster Wheeler North America Corp. Dba Foster Wheeler |
| Status | ACTIVE |
| First End Style | PLAIN |
| Material Document and Classification | ASTM A106, GRADE B ASSN STD SINGLE MATERIAL RESPONSE |
| Diameter | 6.625 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.432 INCHES NOMINAL IN |
| Second End Relationship with First End | IDENTICAL |
| Material | STEEL |
| 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 |
|---|---|
| 404-55-1-33 PIECE LR1 PRIMARY | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| 404-55-1-33-H PIECE LR1 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| Reference | Meaning |
|---|---|
| 404-55-1-33-H | D/9 Drawing number reference only Amec Foster Wheeler North America Corp. Dba Foster Wheeler |
NSN 4710-01-220-8266 is a Tube,bent,metallic, manufactured by Amec Foster Wheeler North America Corp. Dba Foster Wheeler, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-220-8266 has 2 manufacturer part numbers on file: 404-55-1-33 PIECE LR1 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), 404-55-1-33-H PIECE LR1 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler).
2 possible matches (shared part number, not a government interchangeability claim): 4710-01-221-5502, 4710-01-221-5503. Verify interchangeability with system specifications before substitution.
Key specifications for 404-55-1-33 PIECE LR1: First End Style: PLAIN; Material Document and Classification: ASTM A106, GRADE B ASSN STD SINGLE MATERIAL RESPONSE; Diameter: 6.625 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN ROUND. 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.