The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3637, 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 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3456-00-640-3637 |
| Primary Part Number | 777-57-0-8LN357 |
| Item Name | Roll Set,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 |
| First End Taper Length | 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| First End Diameter | 0.299 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Second End Diameter | 0.262 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Second End Taper Length | 0.062 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Departure From Cited Document | AS MODIFIED BY PAR. 3.3.3 ROLLS |
| Roller Quantity | 3 LOCATION NOT OTHERWISE SPECIFIED |
| Nondefinitive Spec/std Data | 2 TYPE |
| Main Body Overall Length | 2.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Roller Style | OVERLAPPING 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 |
|---|---|
| 777-57-0-8LN357 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| 955-596-9LN41 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| 1218-616-8LN357 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| Reference | Meaning |
|---|---|
| MIL-E-17624 | 4/1 Identification reference U.S. Government activity |
| 1385500PCLR81 | 5/2 Secondary reference U.S. Government activity |
| F1385500PCLR81 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3456-00-640-3637 is a Roll Set,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 3456-00-640-3637 has 3 manufacturer part numbers on file: 777-57-0-8LN357 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), 955-596-9LN41 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), 1218-616-8LN357 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler).
Key specifications for 777-57-0-8LN357: First End Taper Length: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; First End Diameter: 0.299 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Second End Diameter: 0.262 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Overall Length: 2.687 INCHES NOMINAL IN. 9 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.