The Tube,boiler,bent, cataloged under National Stock Number 4710-00-377-9731, 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 Babcock & Wilcox Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Tube,boiler,bent |
| FSC / FSG | 4710 — Pipe, Tube and Rigid Tubing (FSG 47) |
| Manufacturers | Babcock & Wilcox Co (CAGE 05073) |
| Parameter | Value |
|---|---|
| NSN | 4710-00-377-9731 |
| Primary Part Number | 7004251 |
| Item Name | Tube,boiler,bent |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Babcock & Wilcox Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 7004251 PRIMARY | Babcock & Wilcox Co (USA) |
| Reference | Meaning |
|---|---|
| MX253030-4WFR | 5/9 Secondary reference Babcock & Wilcox Co |
| MX253030-6MKWFR | 5/9 Secondary reference Babcock & Wilcox Co |
| MX243132WFR | 5/9 Secondary reference Babcock & Wilcox Co |
| MX251181PCWFR | 5/9 Secondary reference Babcock & Wilcox Co |
| NY420-923-3PCWFR | 5/9 Secondary reference Amec Foster Wheeler North America Corp. Dba Foster Wheeler |
| 7004251 | 3/9 Design control — primary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| MX253030-MKWFR | 5/9 Secondary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| MX253030-4PCWFR | 5/9 Secondary reference Babcock & Wilcox Co |
| MX253030-8WFR | 5/9 Secondary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| MX243194-9PCWFR | 5/9 Secondary reference Babcock & Wilcox Co |
NSN 4710-00-377-9731 is a Tube,boiler,bent, manufactured by Babcock & Wilcox Co, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-377-9731 has 1 manufacturer part number on file: 7004251 (Babcock & Wilcox Co).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-424-7392. Verify interchangeability with system specifications before substitution.
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.