Triumph Twist Drill 060406 Screw Machine Drill Bit 3/32

Product Description

The TRIUMPH TWIST DRILL 060406 is a screw machine length drill bit engineered for heavy-duty metal drilling in production and maintenance environments. Sized at 3/32 inch (0.0938 inches) in diameter, it features a 135-degree split point that reduces walking on entry and lowers the thrust needed to penetrate tough workpiece materials. The coated high speed steel construction handles elevated cutting temperatures and resists wear during extended runs. At 1-3/4 inches overall length, this short-flute geometry fits tight spindle clearances on drill presses, CNC machining centers, and hand-operated screw machines. It is installed by machinists, tool-and-die technicians, and maintenance mechanics.

This bit is designed for drilling PH steel and superalloys, making it a practical choice in aerospace, defense, and heavy industrial maintenance applications where hard or work-hardening alloys are common. The T4HD series targets high-feed, high-cycle production runs where tool life and dimensional consistency matter. The 3/4-inch flute length keeps chip evacuation efficient in shallow-hole operations typical of screw machine work. Right-hand cut, straight-cylindrical shank, and regular spiral geometry are standard for conventional spindle chucks without special adapters.

Key Features

• 135-degree split point reduces entry walking and lowers drilling thrust on hard alloys
• Web-thinned, tapered web configuration improves chip flow and reduces heat buildup at the tip
• Coated high speed steel extends tool life on PH steel and superalloy workpieces
• Screw machine (stub) length provides rigidity and fits tight spindle clearances
• Straight-cylindrical shank fits standard drill chucks without adapters
• Heavy-duty T4HD series rated for high-cycle production drilling

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks, screw machines, drill presses, and CNC machining centers accepting a straight-cylindrical shank in the 3/32-inch diameter range.

Installation Notes

This bit is installed by machinists and maintenance mechanics using standard drill chucks or collet holders. Ensure the machine spindle is fully stopped and locked out before changing bits. Secure the shank fully in the chuck to the recommended grip depth to prevent slippage under heavy-duty feed loads. Follow applicable shop safety standards and manufacturer feed-and-speed guidelines for the specific workpiece alloy being drilled.