The Insert,cutting Tool, cataloged under National Stock Number 3455-01-044-3738, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Kennametal Inc. Div Charlotte Business Office. Government technical data includes 7 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3455-01-044-3738 |
| Primary Part Number | NT4R/K420 |
| Item Name | Insert,cutting Tool |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Kennametal Inc. Div Charlotte Business Office |
| Status | ACTIVE |
| Cutter Direction for Which Designed | RIGHT-HAND |
| Mounting Method | CLAMP |
| Overall Thickness | 0.255 INCHES NOMINAL IN |
| Angular Measurement and Type | 60.0 DEGREES BEVEL AND 55.0 DEGREES INCLUDED |
| Shape | PARALLELOGRAM |
| Function for Which Designed | THREADING |
| Material | CARBIDE |
| 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 |
|---|---|
| NT4R/K420 PRIMARY | Kennametal Inc. Div Charlotte Business Office (USA) |
| Reference | Meaning |
|---|---|
| NT-4R/K420 | 5/9 Secondary reference U.S. Government activity |
| NT-4R/K42 | 5/9 Secondary reference Kennametal Inc. Div Charlotte Business Office |
| NT-4R/K42 | 5/9 Secondary reference U.S. Government activity |
| 1113350 | 5/1 Secondary reference Kennametal Inc. Div Charlotte Business Office |
| NT-4R-LP-5 | 5/9 Secondary reference Lincoln Precision Carbide Inc |
NSN 3455-01-044-3738 is a Insert,cutting Tool, manufactured by Kennametal Inc. Div Charlotte Business Office, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-044-3738 has 1 manufacturer part number on file: NT4R/K420 (Kennametal Inc. Div Charlotte Business Office).
Key specifications for NT4R/K420: Cutter Direction for Which Designed: RIGHT-HAND; Mounting Method: CLAMP; Overall Thickness: 0.255 INCHES NOMINAL IN; Angular Measurement and Type: 60.0 DEGREES BEVEL AND 55.0 DEGREES INCLUDED. 7 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.