Hertel 16704561 Screw Machine Drill Bit Size 2 Solid Carbide

Product Description

The HERTEL 16704561 is a screw machine length drill bit designed for high-performance drilling in hard and abrasive workpiece materials. Built from solid carbide throughout, this bit delivers the rigidity and heat resistance needed when cutting cast iron, stainless steel, nickel alloys, titanium alloys, and tool steel. The 135-degree split point geometry reduces walking at entry and lowers thrust force, making it suitable for production drilling where precision and tool life matter. The bit measures 2-7/16 inches overall length with a 1-5/16 inch flute length and cuts a 0.2210 inch diameter hole, corresponding to a wire gauge size 2. It weighs 0.04 pounds and is installed by machinists, toolroom technicians, and maintenance mechanics.

This drill bit is suited for screw machine operations, CNC drilling, manual drill press work, and general machining applications where a stub-length tool provides added stiffness over jobber-length alternatives. The short overall length reduces deflection in tight setups or when working close to a fixture. Primary workpiece materials include cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. The bright uncoated finish makes it appropriate for applications where coating compatibility with specific cutting fluids or workpiece materials is a concern.

Key Features

• Solid carbide construction for rigidity and extended tool life in hard materials
• 135-degree point angle reduces entry walking and lowers drilling thrust
• Screw machine length overall at 2-7/16 inches for added stiffness in close-quarters setups
• Slow spiral flute geometry designed for chip evacuation in cast iron and similar short-chipping materials
• Straight-cylindrical shank for direct chuck mounting without adapter sleeves
• Bright uncoated finish compatible with a wide range of cutting fluids

Compatibility

Designed as an OEM-style replacement screw machine length drill bit for use in standard drill chucks and collets accepting a 0.2210 inch straight-cylindrical shank, within the 0.2000 to 0.2500 inch drill bit size range.

Installation Notes

Installation is performed by machinists or maintenance mechanics using a standard keyed or keyless drill chuck. Ensure the machine spindle is fully stopped and the chuck is tightened securely before operation. Inspect the cutting edges for chipping before each use, as solid carbide is brittle and susceptible to edge damage from improper handling or interrupted cuts. Follow applicable shop safety procedures and machine manufacturer guidelines for spindle speed and feed rate selection based on workpiece material.