Tungaloy 6863712 Replaceable-tip Drill 0.394-0.409in Drillmeister

Product Description

The TUNGALOY 6863712 is a replaceable-tip drill body from the DrillMeister series, engineered for precision holemaking in metal cutting applications. The drill accepts DMP100, DMP101, DMP102, DMP103, and DMP104 interchangeable tip inserts, allowing quick tip changes without removing the body from the machine. It covers a diameter range of 0.394 to 0.409 inches, reaches a maximum drill depth of 3.15 inches, and delivers an 8xD depth-to-diameter ratio. A 5/8-inch Weldon flat shank provides positive rotational drive and straightforward tool holding. Through-coolant capability channels cutting fluid directly to the cutting edge, improving chip evacuation and tool life in deep-hole drilling operations.

This drill body is suited for production drilling and holemaking in machining centers and CNC turning centers where repeatable hole quality and fast insert indexing are priorities. The TID L/D=8 toolholder style targets applications requiring deeper reach relative to diameter, common in automotive, aerospace, and general metalworking environments. The Weldon flat shank interface is compatible with standard milling chucks and side-lock holders sized for 5/8-inch shanks. Through-coolant support makes it appropriate for materials and cutting conditions where flood coolant alone is insufficient for chip control.

Key Features

• Replaceable-tip design accepts DMP100, DMP101, DMP102, DMP103, and DMP104 inserts for fast changeovers
• Diameter range of 0.394 to 0.409 inches with 8xD depth-to-diameter ratio
• Maximum drill depth of 3.15 inches and overall length of 5.677 inches
• 5/8-inch Weldon flat shank for positive rotational engagement in side-lock holders
• Through-coolant design for improved chip evacuation and thermal management in deep-hole operations
• DrillMeister series construction for consistent runout and repeatable hole positioning

Compatibility

Compatible with DMP100, DMP101, DMP102, DMP103, and DMP104 replaceable drill tip inserts. Designed for use in CNC machining centers with standard 5/8-inch Weldon flat shank toolholders that support through-coolant delivery.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or tooling technician with the spindle fully stopped and machine power locked out. Secure the Weldon flat shank firmly in a properly sized side-lock or milling chuck holder before operation, and verify torque on the setscrews against the toolholder manufacturer specifications. Confirm through-coolant passages are clear and the machine coolant system is functioning before running at depth. Inspect the insert seating surfaces for chips or debris before each tip installation to maintain concentricity.