Triumph Twist Drill 060417 Screw Machine Drill Bit 17/64

Product Description

The TRIUMPH TWIST DRILL 060417 is a screw machine length drill bit engineered for heavy-duty metal removal in demanding trade and industrial applications. Sized at 17/64 inch (0.2656 inches) in diameter, this bit features a 135-degree split point for fast, accurate starts without center punching. The high-speed steel construction with a coated finish is built to handle superalloy workpieces and other hard materials that wear down standard bits quickly. A web-thinned, tapered web design reduces thrust requirements and improves chip evacuation. The T4HD series designation indicates heavy-duty grade performance suitable for production environments and repetitive drilling operations.

This bit is suited for use in screw machine and short-hole drilling applications where reduced overall length provides better rigidity and runout control. The straight-cylindrical shank accepts standard drill chucks found on drill presses, CNC machines, and hand-held power tools. Its compact screw machine length makes it a preferred choice in tight workspaces or when drilling into hard alloys, stainless steel, and superalloy stock where a standard-length bit would flex or chatter.

Key Features

• 17/64 inch (0.2656 inches) diameter with 135-degree split point for fast engagement and reduced walking
• High-speed steel with coated finish for extended tool life in hard and abrasive materials
• Screw machine (stub) length for increased rigidity and reduced deflection
• Web-thinned tapered web reduces drilling thrust and improves chip flow
• Right-hand cut with regular spiral flute for standard clockwise drilling operations
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed for use in drill presses, CNC drilling machines, and hand-held power tools accepting a straight-cylindrical shank. Part of the T4HD heavy-duty series, sized within the 0.2500 to 0.3000 inch drill bit range.

Installation Notes

This bit is installed and serviced by machinists, tool-and-die technicians, and maintenance trade professionals. Secure the shank fully in the drill chuck and verify runout before beginning production drilling. Use appropriate cutting fluid or coolant when drilling superalloys or stainless steel to extend tool life, noting this bit does not support coolant-through delivery. Inspect the cutting edges and split point for wear or chipping before each use and replace when dulling causes excessive thrust or poor hole quality.