Kennametal 6771079 Replaceable Drill Tip 0.3125 in Solid Carbide

Product Description

The KENNAMETAL 6771079 is a replaceable drill tip in the KTFSS series, designed for use with compatible modular drill bodies in precision metal-cutting applications. This tip measures 0.3125 inches in cutting diameter, features a 180-degree flat point geometry, and is manufactured from fine-grain solid carbide with a PVD-applied AlTiN coating. The FEG insert geometry and straight flute design support stable chip evacuation during drilling operations. With an overall projection of 0.1819 inches and a functional length of 0.1563 inches, this tip fits into a Size E insert seat and is secured by clamp-style holding. Installation and use are handled by machinists and tool-and-die professionals in production and job-shop environments.

This drill tip is rated for primary workpiece materials including steel (ISO P), stainless steel (ISO M), and cast iron (ISO K), covering a broad range of common ferrous machining applications. The flat-bottom 180-degree point allows for drilling into flat surfaces, inclined entries, inclined exits, and counter-boring operations without a dedicated pilot. The KTFSS series platform is built for high-feed modular drilling where tip replacement extends tool body service life and reduces per-hole tooling cost. No coolant-through capability is present on this tip.

Key Features

• 0.3125 inches (5/16 in) cutting diameter with 180-degree flat point for flat-bottom and through-hole drilling
• Fine-grain solid carbide substrate in Manufacturer Grade KCP15A for wear resistance in ferrous materials
• PVD AlTiN coating provides thermal resistance during high-speed steel and stainless steel cutting
• FEG insert geometry with 2-flute, 4-margin, straight-flute configuration for stable cutting action
• Clamp-style holding in Size E insert seat for secure, repeatable tip indexing
• Supports inclined entry, inclined exit, flat-bottom, and counter-boring operations per application data

Compatibility

Designed for use with KTFSS-series modular drill bodies that accept a Size E insert seat. Compatible with drilling operations on steel, stainless steel, and cast iron workpieces per ISO material codes P, M, and K.

Installation Notes

This tip is installed and replaced by machinists or tooling technicians following the drill body manufacturer clamping procedure. The machine spindle must be fully stopped and locked out before tip removal or installation. Proper seating in the Size E pocket should be confirmed before returning the tool to service. Do not use coolant-through tool bodies expecting internal coolant delivery, as this tip does not support coolant-through flow.