The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3603, 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. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Roll Set,roller Tube Expander |
| FSC / FSG | 3456 — Cutting and Forming Tools for Secondary Metalworking Machinery (FSG 34) |
| Manufacturers | Babcock & Wilcox Co (CAGE 05073); Amec Foster Wheeler North America Corp. Dba Foster Wheeler (CAGE 23230); Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (CAGE 11440) |
| Parameter | Value |
|---|---|
| NSN | 3456-00-640-3603 |
| Primary Part Number | LR28SR28FR4 |
| 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 |
| 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 |
|---|---|
| LR28SR28FR4 | Babcock & Wilcox Co (USA) |
| LR28SR2SFR4 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| F166-940ITEM376 | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| Reference | Meaning |
|---|---|
| F1385500PCSR28FR4LR28 | 5/2 Secondary reference U.S. Government activity |
| LR28SR28FR4 | 5/9 Secondary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
| MIL-E-17624 | 4/1 Identification reference U.S. Government activity |
| 66028 | 3/9 Design control — primary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
| LR28SR28FR4 | 5/9 Secondary reference Indresco Inc Industrial Tool Div |
NSN 3456-00-640-3603 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 3456-00-640-3603 has 3 manufacturer part numbers on file: LR28SR28FR4 (Babcock & Wilcox Co), LR28SR2SFR4 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), F166-940ITEM376 (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric).
3 possible matches (shared part number, not a government interchangeability claim): 2510-00-737-2711, 4730-00-811-0431, 5998-01-052-2073. 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.