The Expander,tube, cataloged under National Stock Number 3456-01-121-9852, 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 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3456-01-121-9852 |
| Item Name | Expander,tube |
| FSC / FSG | 3456 / 34 — Cutting and Forming Tools for Secondary Metalworking Machinery |
| Status | ACTIVE |
| Hand Turning Rod | NOT INCLUDED |
| Roller Effective Length | 1.500 INCHES NOMINAL IN |
| Expander Type | ROLLER |
| Design Type | ADJUSTABLE |
| Mandrel Type | ONE PIECE SQUARE HEAD |
| Flexible Tip | NOT INCLUDED |
| Quantity | 1 |
| Roller Quantity | 3 |
| Roller Type | TAPERED |
| Head Square Length | 0.375 INCHES NOMINAL IN |
| Tube Sheet Maximum Thickness | 1.250 INCHES IN |
| Tube Minimum Inside Diameter Accommodated | 1.055 INCHES IN |
| Guard Ring | NOT INCLUDED |
| Operation Method | HAND OR POWER |
| Square Head Width Across Flats | 0.375 INCHES NOMINAL IN |
| Rated Expansion Diameter | 1.235 INCHES IN |
| 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 |
|---|---|
| 41-C-61 | 5/9 Secondary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
| 40588 | 3/9 Design control — primary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
NSN 3456-01-121-9852 is a Expander,tube, classified under FSC 3456, Cutting and Forming Tools for Secondary Metalworking Machinery. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 7010-01-640-7022. Verify interchangeability with system specifications before substitution.
Key specifications for 3456-01-121-9852: Hand Turning Rod: NOT INCLUDED; Roller Effective Length: 1.500 INCHES NOMINAL IN; Expander Type: ROLLER; Design Type: ADJUSTABLE. 16 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.