The Insert,cutting Tool, cataloged under National Stock Number 3455-01-368-7121, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Walter Usa, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3455-01-368-7121 |
| Primary Part Number | SD-SEE-42A-7AT00420 |
| Item Name | Insert,cutting Tool |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Walter Usa, Llc |
| Status | ACTIVE |
| Mounting Method | COUNTERBORED HOLE |
| Overall Thickness | 0.125 INCHES NOMINAL IN |
| Angular Measurement and Type | 26.0 DEGREES RELIEF |
| Inscribed Circle Diameter | 0.500 INCHES IN |
| Mounting Hole Diameter | 0.178 INCHES IN |
| Shape | SQUARE |
| Function for Which Designed | MILLING |
| Material | CARBIDE |
| Point Radius | 0.005 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 |
| Part Number | Manufacturer |
|---|---|
| SD-SEE-42A-7AT00420 | Walter Usa, Llc (USA) |
| Reference | Meaning |
|---|---|
| SD-SEE42A7A-T00420 GCV1N | 5/9 Secondary reference Valenite, Llc |
| SD-SEE-42A-7AT00420, V1N | 3/9 Design control — primary reference Valenite Inc |
NSN 3455-01-368-7121 is a Insert,cutting Tool, manufactured by Walter Usa, Llc, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-368-7121 has 1 manufacturer part number on file: SD-SEE-42A-7AT00420 (Walter Usa, Llc).
Key specifications for SD-SEE-42A-7AT00420: Mounting Method: COUNTERBORED HOLE; Overall Thickness: 0.125 INCHES NOMINAL IN; Angular Measurement and Type: 26.0 DEGREES RELIEF; Inscribed Circle Diameter: 0.500 INCHES IN. 9 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.