The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3579, is classified within Federal Supply Class 3456 (Cutting and Forming Tools for Secondary Metalworking Machinery) of the Metalworking Machinery (continued) group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3456-00-640-3579 |
| Item Name | Roll Set,roller Tube Expander |
| FSC / FSG | 3456 / 34 — Cutting and Forming Tools for Secondary Metalworking Machinery |
| Status | ACTIVE |
| First End Taper Length | 0.031 INCHES NOMINAL FIRST GROUP IN |
| First End Taper Length | 0.063 INCHES NOMINAL THIRD GROUP IN |
| First End Diameter | 0.565 INCHES NOMINAL FIRST GROUP IN |
| First End Diameter | 0.575 INCHES NOMINAL SECOND GROUP IN |
| First End Diameter | 0.718 INCHES NOMINAL THIRD GROUP IN |
| Second End Diameter | 0.556 INCHES NOMINAL THIRD GROUP IN |
| Second End Diameter | 0.604 INCHES NOMINAL FIRST GROUP IN |
| Second End Diameter | 0.604 INCHES NOMINAL SECOND GROUP IN |
| First End Flare Length | 0.194 INCHES NOMINAL THIRD STYLE GROUP IN |
| Second End Taper Length | 0.500 INCHES NOMINAL FIRST GROUP IN |
| Second End Taper Length | 0.500 INCHES NOMINAL SECOND GROUP IN |
| Second End Flare Diameter | 45.0 DEG |
| Departure From Cited Document | AS MODIFIED BY PAR. 3.3.1 EXPANDERS AND PAR. 3.3.3 ROLLS |
| Roller Quantity | 1 THIRD GROUP |
| Roller Quantity | 1 SECOND GROUP |
| Roller Quantity | 2 FIRST GROUP |
| Nondefinitive Spec/std Data | 1 CLASS AND 1 TYPE |
| Main Body Overall Length | 0.460 INCHES NOMINAL THIRD GROUP IN |
| Main Body Overall Length | 1.875 INCHES NOMINAL SECOND GROUP IN |
| Main Body Overall Length | 2.437 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 |
| Reference | Meaning |
|---|---|
| MIL-E-17624 | 4/1 Identification reference U.S. Government activity |
| F1385500PCSR26FR4LR26 | 3/2 Design control — primary reference U.S. Government activity |
| X LR-26 X FR-4 | 5/2 Secondary reference U.S. Government activity |
NSN 3456-00-640-3579 is a Roll Set,roller Tube Expander, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
Key specifications for 3456-00-640-3579: First End Taper Length: 0.031 INCHES NOMINAL FIRST GROUP IN; First End Taper Length: 0.063 INCHES NOMINAL THIRD GROUP IN; First End Diameter: 0.565 INCHES NOMINAL FIRST GROUP IN; First End Diameter: 0.575 INCHES NOMINAL SECOND GROUP IN. 23 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.