The Mandrel,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3243, 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 6 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3456-00-640-3243 |
| Primary Part Number | M4 3-8-609 |
| Item Name | Mandrel,roller Tube Expander |
| FSC / FSG | 3456 / 34 — Cutting and Forming Tools for Secondary Metalworking Machinery |
| Manufacturer | Babcock & Wilcox Co |
| Status | ACTIVE |
| Hand Turning Rod | NOT INCLUDED |
| Square Shank Length | 0.750 INCHES NOMINAL IN |
| Drive Type | SQUARE |
| Taper Major Diameter | 0.718 INCHES NOMINAL IN |
| Size Designator | 0.500 INCHES NOMINAL IN |
| Operation Method | MANUAL OR POWER |
| 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 |
|---|---|
| M4 3-8-609 | Babcock & Wilcox Co (USA) |
| 1218-616-8LN384 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| 936-596-8LN327 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| 777-57-0-8LN384 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| 47-724-4-10IT16 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| Reference | Meaning |
|---|---|
| F1385500DESIGNATI0NM4 3-8 0-609 | 3/2 Design control — primary reference U.S. Government activity |
| M4 3-8IN A DIA 609 | 5/9 Secondary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
NSN 3456-00-640-3243 is a Mandrel,roller Tube Expander, manufactured by Babcock & Wilcox Co, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
NSN 3456-00-640-3243 has 5 manufacturer part numbers on file: M4 3-8-609 (Babcock & Wilcox Co), 1218-616-8LN384 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), 936-596-8LN327 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), 777-57-0-8LN384 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), 47-724-4-10IT16 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler).
Key specifications for M4 3-8-609: Hand Turning Rod: NOT INCLUDED; Square Shank Length: 0.750 INCHES NOMINAL IN; Drive Type: SQUARE; Overall Length: 4.375 INCHES NOMINAL IN. 6 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.