The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-01-191-6759, is classified within Federal Supply Class 3456 (Cutting and Forming Tools for Secondary Metalworking Machinery) of the Metalworking Machinery (continued) group. The manufacturer of record is Babcock & Wilcox Co. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3456-01-191-6759 |
| Primary Part Number | 1627F PIECE 3653 |
| Item Name | Roll Set,roller Tube Expander |
| FSC / FSG | 3456 / 34 — Cutting and Forming Tools for Secondary Metalworking Machinery |
| Manufacturer | Babcock & Wilcox Co |
| Status | ACTIVE |
| First End Taper Length | 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| First End Diameter | 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Second End Diameter | 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| First End Radius | 1.250 INCHES NOMINAL IN |
| Roller Quantity | 3 LOCATION NOT OTHERWISE SPECIFIED |
| Main Body Overall Length | 1.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Roller Style | ROUNDED TAPER LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| 1627F PIECE 3653 PRIMARY | Babcock & Wilcox Co (USA) |
| Reference | Meaning |
|---|---|
| 1627F PIECE 3653 | 3/9 Design control — primary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
NSN 3456-01-191-6759 is a Roll Set,roller Tube Expander, manufactured by Babcock & Wilcox Co, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
NSN 3456-01-191-6759 has 1 manufacturer part number on file: 1627F PIECE 3653 (Babcock & Wilcox Co).
Key specifications for 1627F PIECE 3653: First End Taper Length: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; First End Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Second End Diameter: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; First End Radius: 1.250 INCHES NOMINAL IN. 7 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.