Hertel 2386910 Screw Machine Drill Bit 7/16 Inch Hss Tin

Product Description

The HERTEL 2386910 is a screw machine length drill bit designed for high-speed steel cutting applications where rigidity and precision matter. Built from heavy-duty high-speed steel with a titanium nitride (TiN) coating, it delivers improved surface hardness and extended tool life compared to uncoated HSS bits. The 135-degree split point reduces walking at entry and requires less feed pressure, making it well suited for production drilling. At 3-7/16 inches overall length, the shortened flute-to-body ratio gives this bit greater rigidity than a jobber-length equivalent. Right-hand cutting with a regular spiral and straight cylindrical shank. Weighs 0.35 pounds.

Screw machine length drill bits are a standard choice in production machining, fabrication shops, and maintenance environments where shorter flute length improves hole accuracy and reduces deflection. The 7/16-inch diameter and straight cylindrical shank make this bit compatible with standard drill chucks, drill presses, lathes, and CNC machining centers. The web-thinned, parallel-web configuration helps clear chips efficiently in ferrous and non-ferrous materials. This bit is appropriate for machinists, fabricators, millwrights, and maintenance technicians working in metal drilling applications.

Key Features

• TiN coating increases surface hardness and extends cutting tool life versus uncoated HSS
• 135-degree split point reduces drill walking and lowers required feed pressure at entry
• Screw machine length body provides greater rigidity than jobber-length drill bits of the same diameter
• Web-thinned parallel web improves chip evacuation during drilling
• Right-hand spiral flute, straight cylindrical shank fits standard 3-jaw and keyless chucks
• Heavy-duty grade construction rated for continuous production use

Compatibility

Designed as a direct-fit screw machine length drill bit for use in standard drill chucks, drill presses, lathes, and CNC machining centers accepting a straight cylindrical shank in the 0.4000 to 0.4500 decimal inch diameter range.

Installation Notes

Install and remove this bit only with the machine powered down and spindle fully stopped. Secure the straight cylindrical shank firmly in the chuck to the recommended grip depth before operation to prevent slippage under load. Wear appropriate eye protection and follow applicable machine guarding requirements per OSHA 1910.212 and shop safety protocols. Do not exceed the rated spindle speed for the workpiece material and bit diameter.