Hertel 2386761 Screw Machine Drill Bit 13/64 Inch Hss Tin

Product Description

The HERTEL 2386761 is a screw machine length drill bit designed for high-production drilling in metal, steel, and similar materials. Built from heavy-duty high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction compared to uncoated HSS bits. The 135-degree split point starts on contact without a center punch and reduces thrust requirements. At 2.25 inches overall length, this stub-length geometry provides added rigidity in drill press, CNC, and turret lathe applications where chatter and deflection need to be minimized. Machinists, millwrights, and maintenance mechanics are the primary users.

This bit is suited for production environments requiring consistent hole quality in ferrous and non-ferrous metals. The screw machine length format is a standard choice for CNC machining centers, turret lathes, and bench drill presses where a shorter, stiffer bit reduces runout. The 0.2031-inch diameter is sized for applications requiring a 13/64-inch bore. Right-hand cutting direction is the standard orientation for conventional drill press and rotary tool use. The web-thinned parallel web improves chip evacuation and reduces the force needed to drive the bit through material.

Key Features

• 135-degree split point starts on contact, eliminating the need for a center punch
• TiN coating increases surface hardness and extends tool life in metal drilling applications
• Heavy-duty HSS construction handles interrupted cuts and hard materials
• Web-thinned parallel web reduces thrust and improves chip flow
• Stub screw machine length provides added rigidity versus jobber-length bits
• Right-hand spiral flute with straight-cylindrical shank fits standard drill chucks

Compatibility

Designed as a standard screw machine length drill bit compatible with any 3-jaw drill chuck or collet system accepting a straight-cylindrical shank in the applicable size range.

Installation Notes

Installation and use should follow standard machine shop safety practices. Secure the workpiece fully before drilling and confirm chuck tightness before spindle engagement. Use appropriate cutting fluid or coolant when drilling ferrous metals to manage heat, noting this bit does not support through-coolant delivery. Inspect the cutting edges for wear or chipping before each use and replace the bit if the TiN coating shows significant wear-through at the cutting lips.