The Insert,cutting Tool, cataloged under National Stock Number 3455-01-256-3402, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Tool Serv. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3455-01-256-3402 |
| Primary Part Number | TPG-322/TSC515 |
| Item Name | Insert,cutting Tool |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Tool Serv |
| Status | ACTIVE |
| Mounting Method | CLAMP |
| Overall Thickness | 0.125 INCHES NOMINAL IN |
| Angular Measurement and Type | 60.0 DEGREES INCLUDED AND 11.0 DEGREES RELIEF |
| Inscribed Circle Diameter | 0.375 INCHES IN |
| Shape | TRIANGULAR |
| Features Provided | ALL SURFACES GROUND AND COATED AND HONED AND POSITIVE RAKE |
| Function for Which Designed | MILLING |
| Material | CARBIDE |
| Point Radius | 0.031 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 |
|---|---|
| TPG322AN2020 | American National Carbide Co (USA) |
| TPG-322/TSC515 PRIMARY | Tool Serv (USA) |
| Reference | Meaning |
|---|---|
| TPG-322A/TNT | 5/9 Secondary reference American National Carbide Co |
| TPG-322-KC850 | 5/9 Secondary reference U.S. Government activity |
NSN 3455-01-256-3402 is a Insert,cutting Tool, manufactured by Tool Serv, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-256-3402 has 2 manufacturer part numbers on file: TPG322AN2020 (American National Carbide Co), TPG-322/TSC515 (Tool Serv).
1 possible match (shared part number, not a government interchangeability claim): 3455-01-263-3616. Verify interchangeability with system specifications before substitution.
Key specifications for TPG-322/TSC515: Mounting Method: CLAMP; Overall Thickness: 0.125 INCHES NOMINAL IN; Angular Measurement and Type: 60.0 DEGREES INCLUDED AND 11.0 DEGREES RELIEF; Inscribed Circle Diameter: 0.375 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.