Triumph Twist Drill 060407 Screw Machine Drill Bit

Product Description

The TRIUMPH TWIST DRILL 060407 is a screw machine length drill bit designed for heavy-duty metal cutting applications. It measures 0.1094 inches (7/64 inch) in diameter with an overall length of 1-13/16 inches and a flute length of 13/16 inches. The bit is manufactured from high speed steel with a coated finish, features a 135-degree split point, and uses a straight-cylindrical shank for secure chuck retention. The web-thinned, tapered web design reduces thrust and improves centering on hard materials. This bit is suited for machinists, tool and die workers, and production drilling operations.

The 060407 is built for drilling precipitation-hardened steels and superalloys, making it a practical choice in machine shops, maintenance environments, and production lines where short-length rigidity is required. The screw machine length format provides extra stiffness compared to jobber-length bits, reducing deflection in tight-tolerance hole applications. Right-hand spiral flute geometry promotes efficient chip evacuation in ferrous and high-strength alloy workpieces.

Key Features

• 0.1094 inch (7/64 inch) diameter, screw machine length for added rigidity
• High speed steel construction with coated finish for extended wear resistance
• 135-degree split point for self-centering and reduced walking on hard stock
• Web-thinned tapered web lowers thrust requirements in tough alloys
• Right-hand cut with regular spiral flute geometry for efficient chip removal
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed for drilling precipitation-hardened steel and superalloy workpieces; rated for the 0.1000 to 0.1500 inch drill bit size range within the Series T4HD heavy-duty screw machine length family.

Installation Notes

This bit is installed and operated by machinists and tool and die professionals using standard drill presses, CNC machines, or hand-held power drills with compatible chucks. Secure the straight-cylindrical shank fully in the chuck before operation and verify runout before drilling hard alloys. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling superalloys or hardened steels to manage heat buildup. Do not exceed the recommended feed and speed parameters for the workpiece material.