Triumph Twist Drill 060415 15/64 Screw Machine Drill Bit

Product Description

The TRIUMPH TWIST DRILL 060415 is a screw machine length drill bit engineered for heavy-duty drilling applications in superalloys and other demanding workpiece materials. At 15/64 inch (0.2344 inches) in diameter, it features a 135-degree split point that reduces walking and allows the bit to self-center without a pilot hole. The high-speed steel (HSS) construction is coated for added wear resistance, and the tapered, web-thinned core reduces cutting resistance while maintaining rigidity. Licensed tradespeople and machinists rely on this bit when tight tolerances and consistent hole quality are required in short-reach drilling situations.

This bit is sized for screw machine length applications, which means a shorter overall length of 2-7/16 inches compared to jobber-length equivalents. That reduced length provides added stiffness and minimizes deflection when drilling into hard or gummy materials like superalloys. The right-hand spiral flute evacuates chips efficiently, making it a practical choice for production drilling, CNC operations, and manual machine work where runout and chatter must be kept to a minimum.

Key Features

• 135-degree split point reduces thrust force and eliminates the need for a center punch on most materials
• High-speed steel construction with coating for extended tool life in abrasive and high-temperature applications
• Screw machine length body (2-7/16 inches overall) provides increased rigidity and reduced deflection
• Web-thinned, tapered web design lowers cutting resistance without sacrificing core strength
• Right-hand cut with regular spiral flute for reliable chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as an OEM-style replacement or standard tooling selection for screw machine length drill bit applications in the 0.2000 to 0.2500 inch diameter range, particularly where heavy-duty performance in superalloy or hard material drilling is required.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with drilling operations on metalworking equipment. Ensure the machine spindle and chuck are fully stopped and the workpiece is securely clamped before bit insertion or removal. Use cutting fluid appropriate for the workpiece material to extend tool life and improve hole finish. Inspect the cutting edges for wear or chipping before each use and replace if damage is observed.