Allied Machine 4T-05T203-N Indexable Drill Insert 4T Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 4T-05T203-N is a solid carbide indexable drill insert designed for precision hole-making operations in metal cutting applications. This 4T-style insert features a TiCN (titanium carbonitride) coating for improved wear resistance and surface hardness. With a 0.3 mm corner radius, a 13-degree relief angle, and a 5.50 mm cutting length, it is engineered for accurate, repeatable drilling in demanding production environments. It is installed by machinists and tool-room technicians working on CNC or manual drilling systems requiring indexable tooling.

This insert is suited for drilling operations in ferrous and non-ferrous materials consistent with K15 and M15 material grade classifications. Typical applications include production drilling in cast iron, steel alloys, and similar materials where a right-hand insert with a 2.5 mm hole diameter compatibility is required. The 05T203 insert size positions this part for use in small-diameter indexable drill bodies where close tolerances and controlled chip flow are priorities.

Key Features

• Solid carbide construction in K15 and M15 material grades for hardness and thermal stability
• TiCN coating provides increased surface hardness and extended tool life in abrasive cutting conditions
• 0.3 mm corner radius for controlled edge geometry and reduced chipping risk
• 13-degree relief angle supports efficient chip evacuation and reduced cutting forces
• Right-hand insert orientation for standard drill body configurations
• 5.50 mm cutting length suited for shallow to moderate depth drilling applications

Compatibility

Designed as an OEM-style indexable insert replacement for 4T-style drill bodies requiring an 05T203 insert size with right-hand orientation. Specific drill body compatibility should be confirmed against the tool body manufacturer specifications before installation.

Installation Notes

Indexable drill inserts should be installed by qualified machinists or tooling technicians. Ensure the drill body pocket and clamping seat are clean and free of chips or debris before seating the insert. Follow the drill body manufacturer torque specifications for the clamping screw to avoid insert movement or seat damage. Inspect the insert seating and edge condition before resuming cutting operations.