The Mandrel,roller Tube Expander, cataloged under National Stock Number 3456-00-059-4439, 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 Amec Foster Wheeler North America Corp. Dba Foster Wheeler. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 3456-00-059-4439 |
| Primary Part Number | M127-8-421 |
| Item Name | Mandrel,roller Tube Expander |
| FSC / FSG | 3456 / 34 — Cutting and Forming Tools for Secondary Metalworking Machinery |
| Manufacturer | Amec Foster Wheeler North America Corp. Dba Foster Wheeler |
| Status | ACTIVE |
| Hand Turning Rod | NOT INCLUDED |
| Square Shank Length | 0.750 INCHES NOMINAL IN |
| Drive Type | SQUARE |
| Taper Major Diameter | 0.702 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 12-7/8 0.390 DIM. A DESIGN |
| Size Designator | 0.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| M127-8-421 PRIMARY | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| Reference | Meaning |
|---|---|
| 5000S5101F1385500 | 3/1 Design control — primary reference U.S. Government activity |
NSN 3456-00-059-4439 is a Mandrel,roller Tube Expander, manufactured by Amec Foster Wheeler North America Corp. Dba Foster Wheeler, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
NSN 3456-00-059-4439 has 1 manufacturer part number on file: M127-8-421 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler).
7 possible matches (shared part number, not a government interchangeability claim): 3456-00-059-4440, 3456-00-059-4442, 3456-00-059-4777. Verify interchangeability with system specifications before substitution.
Key specifications for M127-8-421: Hand Turning Rod: NOT INCLUDED; Square Shank Length: 0.750 INCHES NOMINAL IN; Drive Type: SQUARE; Overall Length: 12.875 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.