Kennametal 6389431 Indexable Drill Body Straight Shank

Product Description

The KENNAMETAL 6389431 is a straight-shank indexable drill body in the KenTIP FS series, designed for high-penetration drilling applications where replaceable carbide tips are used in place of full solid-carbide drills. This body features a 3/8-inch straight-cylindrical shank and a drill depth-to-diameter ratio of 8xD, making it suited for deep-hole drilling operations in production machining environments. The toolholder style is KTFS, compatible with the KenTIP FS modular tip system. It has an overall length of approximately 4.80 inches (122 mm) and a flute length of approximately 3.06 inches (77.70 mm). Machinists and CNC operators install this body as part of a modular drilling system to reduce tooling cost and improve hole quality in medium to high-volume runs.

This indexable drill body is intended for use in CNC machining centers, lathes with live tooling, and drill presses capable of accepting straight-shank tooling. The 8xD depth ratio supports through-hole and blind-hole drilling in a range of workpiece materials when paired with the appropriate KenTIP FS insert tip. The straight-cylindrical shank fits standard ER collet chucks and hydraulic toolholders sized for 3/8-inch shanks. This product is typically specified by machinists, tooling engineers, and CNC programmers in job shops and production facilities.

Key Features

• KenTIP FS series KTFS toolholder style - accepts modular replaceable drill tips to reduce per-hole tooling cost
• 8xD drill depth-to-diameter ratio for deep-hole drilling capability
• 3/8-inch straight-cylindrical shank for compatibility with standard collet and hydraulic chuck systems
• Overall length of 122 mm (approximately 4.80 inches) with a flute length of 77.70 mm (approximately 3.06 inches)
• Lightweight body at 0.07 pounds, minimizing spindle load in high-RPM applications

Compatibility

Designed for use with the KenTIP FS modular drill tip system using KTFS-style toolholders. Specific compatible tip part numbers were not provided in the available product data; consult KENNAMETAL tooling documentation to confirm correct tip selection for this body.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the control is in an e-stop or tool-change safe state before mounting or removing the drill body. Secure the 3/8-inch shank in a properly sized collet chuck or hydraulic holder to the toolholder manufacturer's specified clamping procedure. Inspect the tip seat and locking mechanism for chips or wear before seating a new KenTIP FS insert tip.