The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3671, 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 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3456-00-640-3671 |
| Primary Part Number | LR7SR7FR1 |
| 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 | 0.031 INCHES NOMINAL FIRST GROUP IN |
| First End Taper Length | 0.023 INCHES NOMINAL THIRD GROUP IN |
| First End Diameter | 0.250 INCHES NOMINAL FIRST GROUP IN |
| First End Diameter | 0.262 INCHES NOMINAL SECOND GROUP IN |
| First End Diameter | 0.390 INCHES NOMINAL THIRD GROUP IN |
| Second End Diameter | 0.249 INCHES NOMINAL THIRD GROUP IN |
| Second End Diameter | 0.299 INCHES NOMINAL FIRST GROUP IN |
| Second End Diameter | 0.299 INCHES NOMINAL SECOND GROUP IN |
| First End Flare Length | 0.118 INCHES NOMINAL THIRD STYLE GROUP IN |
| Second End Taper Length | 0.250 INCHES NOMINAL SECOND GROUP IN |
| Second End Taper Length | 0.250 INCHES NOMINAL FIRST GROUP IN |
| Countersink Length | 0.218 INCHES NOMINAL THIRD GROUP IN |
| Second End Flare Diameter | 53.0 DEG; 0.329 IN. LG IN |
| Roller Quantity | 1 THIRD GROUP |
| Roller Quantity | 1 SECOND GROUP |
| Roller Quantity | 2 FIRST GROUP |
| Main Body Overall Length | 0.500 INCHES NOMINAL THIRD GROUP IN |
| Main Body Overall Length | 2.375 INCHES NOMINAL SECOND GROUP IN |
| Main Body Overall Length | 3.125 INCHES NOMINAL FIRST GROUP IN |
| Roller Style | TAPER SECOND GROUP |
| Roller Style | FLARE THIRD GROUP |
| Roller Style | OVERLAPPING FIRST GROUP |
| 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 |
|---|---|
| LR7SR7FR1 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| Reference | Meaning |
|---|---|
| X LR-7 X FR-1 | 5/2 Secondary reference U.S. Government activity |
| F1385500PCSR7FR1LR7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3456-00-640-3671 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 3456-00-640-3671 has 1 manufacturer part number on file: LR7SR7FR1 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler).
Key specifications for LR7SR7FR1: First End Taper Length: 0.031 INCHES NOMINAL FIRST GROUP IN; First End Taper Length: 0.023 INCHES NOMINAL THIRD GROUP IN; First End Diameter: 0.250 INCHES NOMINAL FIRST GROUP IN; First End Diameter: 0.262 INCHES NOMINAL SECOND GROUP IN. 22 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.