Kennametal 1804829 Indexable Drill Insert KC7140 Trigon

Product Description

The KENNAMETAL 1804829 is a solid carbide indexable drill insert designed for use in indexable drilling toolholders requiring a DFTHP-style insert. It carries the KC7140 manufacturer grade with a PVD-applied TiN and TiCN multilayer coating, delivering wear resistance and thermal stability suited to steel and cast iron cutting applications. The insert features an 84-degree trigon shape with an 8 mm inscribed circle, a 0.8 mm corner radius, and an HP chipbreaker geometry. At 0.1476 inches thick and 0.2083 inches in length, this insert is sized for the 05T308 insert seat designation. Installed by machinists and toolroom professionals, it fits precision drill bodies used in production and job-shop environments.

This insert is appropriate for moderate-to-high speed drilling operations in materials classified under C5 and C6 material grades, including steels and cast irons. The HP chipbreaker is engineered for reliable chip evacuation in through-hole and blind-hole drilling scenarios. The PVD coating process preserves edge sharpness, making this insert a practical choice for operations where cutting-edge integrity directly affects hole quality and tool life. It is sold individually, with a minimum order quantity of 5 units.

Key Features

• KC7140 grade with PVD-applied TiN and TiCN multilayer coating for wear and heat resistance
• 84-degree trigon shape with HP chipbreaker for controlled chip formation
• 8 mm inscribed circle with 0.8 mm corner radius for precise seat engagement
• Relief angle of 8 degrees supports stable cutting geometry in drilling applications
• Insert size designation 05T308 for direct toolholder compatibility reference
• Solid carbide substrate provides rigidity suited to C5 and C6 material grades

Compatibility

Designed as an OEM-style replacement and standard production insert for indexable drill bodies accepting DFTHP-style, 05T308-designated trigon inserts.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine fully powered down and the spindle locked. Seating surfaces on the drill body pocket should be cleaned and inspected for wear or debris before inserting. Use the appropriate torx or hex key as specified by the toolholder manufacturer to achieve proper clamping torque without overtightening. Handle carbide inserts with care to avoid chipping the cutting edges during installation or storage.