The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3697, 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 27 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3456-00-640-3697 |
| 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 | 0.046 INCHES NOMINAL THIRD GROUPUNABLE TO DECODE IN |
| First End Taper Length | 0.375 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN |
| First End Diameter | 0.418 INCHES NOMINAL SECOND GROUPUNABLE TO DECODE IN |
| First End Diameter | 0.451 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN |
| First End Diameter | 0.584 INCHES NOMINAL THIRD GROUPUNABLE TO DECODE IN |
| Second End Diameter | 0.406 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN |
| Second End Diameter | 0.418 INCHES NOMINAL THIRD GROUP IN |
| Second End Diameter | 0.451 INCHES NOMINAL SECOND GROUPUNABLE TO DECODE IN |
| Second End Diameter | UNABLE TO DECODEUNABLE TO DECODE |
| First End Flare Length | 0.189 INCHES NOMINAL THIRD STYLE GROUPUNABLE TO DECODE IN |
| Second End Taper Length | 0.031 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN |
| Second End Taper Length | 0.375 INCHES NOMINAL SECOND GROUPUNABLE TO DECODE IN |
| Countersink Length | 0.188 INCHES NOMINAL THIRD GROUP IN |
| Countersink Length | UNABLE TO DECODE |
| Second End Flare Diameter | 53.0 DEG SECOND STYLE GROUP,0.518 IN. LG THIRD STYLE GROUP IN |
| Departure From Cited Document | AS MODIFIED BY PAR. 3.3.1 EXPANDERS AND PAR. 3.3.3 ROLLS |
| Roller Quantity | UNABLE TO DECODE |
| 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 | 0.472 INCHES NOMINAL THIRD GROUPUNABLE TO DECODE IN |
| Main Body Overall Length | 2.125 INCHES NOMINAL SECOND GROUPUNABLE TO DECODE IN |
| Main Body Overall Length | 2.890 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN |
| Roller Style | FLARE THIRD GROUPUNABLE TO DECODE |
| Roller Style | OVERLAPPING FIRST GROUPUNABLE TO DECODE |
| Roller Style | TAPER SECOND GROUPUNABLE TO DECODE |
| 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 |
| X LR-20 X FR-3 | 5/2 Secondary reference U.S. Government activity |
| F1385500PCSR20FR3LR20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3456-00-640-3697 is a Roll Set,roller Tube Expander, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
Key specifications for 3456-00-640-3697: First End Taper Length: 0.046 INCHES NOMINAL THIRD GROUPUNABLE TO DECODE IN; First End Taper Length: 0.375 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN; First End Diameter: 0.418 INCHES NOMINAL SECOND GROUPUNABLE TO DECODE IN; First End Diameter: 0.451 INCHES NOMINAL FIRST GROUPUNABLE TO DECODE IN. 27 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.