Hertel 74148909 Screw Machine Drill Bit 0.2362 in Carbide

Product Description

The HERTEL 74148909 is a screw machine length drill bit designed for high-performance drilling in demanding materials. Built from solid carbide in material grade C2, it measures 6.00 mm (0.2362 inches) in diameter with an overall length of 2-7/16 inches. The 135-degree split point reduces walking and lowers thrust requirements on entry. A slow spiral flute geometry and web-thinned, parallel web configuration make it well-suited for drilling hard and abrasive materials where conventional high-speed steel bits break down. Intended for use by machinists, tool-and-die professionals, and industrial maintenance technicians.

This drill bit is engineered for cutting cast iron, nickel alloys, stainless steel, titanium alloys, and tool steel. Its screw machine length provides added rigidity compared to jobber-length drills, making it a practical choice for CNC machining centers, turret lathes, and manual drill presses where stub-length rigidity improves hole location and tool life. The bright/uncoated finish keeps the surface true to carbide hardness without coating buildup affecting tolerance-sensitive applications.

Key Features

• Solid carbide construction, material grade C2, for extended tool life in hard and abrasive workpiece materials
• 135-degree split point reduces drill walk and cutting thrust on entry
• Slow spiral flute design optimized for cast iron, stainless steel, nickel alloys, titanium alloys, and tool steel
• Web-thinned parallel web lowers cutting resistance and improves chip evacuation
• Bright/uncoated finish maintains dimensional accuracy; diameter tolerance held to +0.0000 to -0.0005 inches
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification
• Coolant-through: No - suited for dry or flood-coolant external applications

Compatibility

Designed as a screw machine length replacement or production drill for applications requiring a 6.00 mm (0.2362 inch) diameter hole in materials within the 5.00 to 6.50 mm drill bit size range group.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with carbide tooling. Secure the straight-cylindrical shank fully in a properly sized drill chuck or collet before operation, and verify runout is within acceptable limits before cutting. Carbide is brittle - avoid interrupted cuts, lateral loads, or shock conditions that can chip the cutting edge. Observe machine manufacturer speed and feed recommendations for the specific workpiece material being drilled.