Kennametal 6389421 Indexable Drill Body Kentip Fs 5xd

Product Description

The KENNAMETAL 6389421 is a straight-shank indexable drill body from the KenTIP FS series, designed for use with KTFS-style replaceable drill tips in precision drilling applications. With a 5/16-inch shank diameter and a 5xD drill depth-to-diameter ratio, this drill body delivers consistent bore depth performance in metalworking and machining environments. The overall length is 92.22 millimeters, with a flute length of 49.10 millimeters and a shank length of 38.61 millimeters. It is installed and operated by machinists and CNC tooling specialists working with indexable drilling systems on lathes, machining centers, and similar equipment.

The 6389421 is suited for production and job-shop drilling operations where repeatable hole quality and quick tip exchange are priorities. The KenTIP FS platform is engineered for through-coolant capability and rigid tip seating, making it applicable across a range of ferrous and non-ferrous workpiece materials. Typical installations include vertical and horizontal machining centers requiring 5xD depth capacity with a straight-cylindrical shank interface.

Key Features

• 5xD drill depth-to-diameter ratio for deep-hole capability in a compact body
• Straight-cylindrical shank diameter of 5/16 inch for standard collet or chuck mounting
• KTFS toolholder style for use with KenTIP FS indexable drill tip inserts
• Overall length of 92.22 millimeters with a flute length of 49.10 millimeters
• Shank length of 38.61 millimeters provides stable clamping engagement
• Part of the KenTIP FS series, designed for repeatable tip indexing without regrinding

Compatibility

Designed for use with KTFS-style KenTIP FS indexable drill tips. Compatible with toolholding systems accepting a straight-cylindrical 5/16-inch shank. Refer to KENNAMETAL KenTIP FS series documentation to confirm tip insert compatibility before ordering.

Installation Notes

Installation and tip changes should be performed by qualified machinists following the machine tool manufacturer's lockout and spindle-stop procedures before handling the drill body. Ensure the shank seating surface and collet or chuck bore are clean and free of chips before clamping. Torque the tip retention screw to the value specified in the KENNAMETAL KenTIP FS assembly instructions - do not estimate. Verify runout after mounting per shop tolerance requirements before commencing drilling operations.