The Roll Set,roller Tube Expander, cataloged under National Stock Number 3456-00-640-3580, 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 Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3456-00-640-3580 |
| Primary Part Number | D168-078-E27SPARE |
| Item Name | Roll Set,roller Tube Expander |
| FSC / FSG | 3456 / 34 — Cutting and Forming Tools for Secondary Metalworking Machinery |
| Manufacturer | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
| 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 | 0.608 INCHES NOMINAL FIRST GROUP IN |
| Second End Diameter | 0.608 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. 3.3.3 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 | 2.125 INCHES NOMINAL SECOND GROUP IN |
| Main Body Overall Length | 2.687 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 |
|---|---|
| D168-078-E27SPARE | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| E164-863-107SPARE ROLL | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| E-168-163ITEM107SPARE | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| E-168-670ITEM107SPARE | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| 47-724-4-10IT13 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| E168-130 ITEM 107SPARE ROLL | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| LR27SR27FR4 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| Reference | Meaning |
|---|---|
| 34883 | C/1 Advisory reference — outside the item-of-supply concept Thomas C. Wilson, Inc. Dba Thomas C Wilson |
| LR27SR27FR4 | C/1 Advisory reference — outside the item-of-supply concept Thomas C. Wilson, Inc. Dba Thomas C Wilson |
| LR-27 SR-27 FR- | C/1 Advisory reference — outside the item-of-supply concept Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
| X LR-27 X FR-4 | 5/2 Secondary reference U.S. Government activity |
| MIL-E-17624 | 4/1 Identification reference U.S. Government activity |
| F1385500PCSR27FR4LR27 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3456-00-640-3580 is a Roll Set,roller Tube Expander, manufactured by Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
NSN 3456-00-640-3580 has 7 manufacturer part numbers on file: D168-078-E27SPARE (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), E164-863-107SPARE ROLL (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), E-168-163ITEM107SPARE (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), E-168-670ITEM107SPARE (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), 47-724-4-10IT13 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-553-0418. Verify interchangeability with system specifications before substitution.
Key specifications for D168-078-E27SPARE: 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.