Hertel 16704314 Screw Machine Drill Bit Size 7 Solid Carbide

Product Description

The HERTEL 16704314 is a screw machine length drill bit designed for precision drilling in hard and difficult-to-machine materials. Built from solid carbide, this bit delivers the rigidity and heat resistance needed when working with cast iron, stainless steel, nickel alloys, titanium alloys, and tool steel. The 135-degree split point reduces walking and requires less thrust to start a hole without a center punch. At 2.25 inches overall length, the stub-length body increases stiffness and minimizes deflection in short-reach drilling applications. The bright, uncoated finish is suitable for general carbide applications and allows for easy wear inspection. Machinists and tool-room technicians install this bit in CNC machining centers, drill presses, and hand-held power tools.

This drill bit is intended for high-precision production and maintenance drilling in metalworking environments. The wire gauge size 7 corresponds to a 0.2010-inch diameter, placing it in the 0.2000 to 0.2500-inch decimal range. Its slow spiral geometry is matched to hard, short-chipping materials such as cast iron and titanium alloy, where a standard helix would pack chips and generate excessive heat. It is commonly used in job shops, aerospace component work, and industrial maintenance where tight-tolerance holes in hard metals are required. Right-hand cut and straight cylindrical shank make it compatible with standard drill chucks and collet holders.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard metals
• 135-degree point angle reduces thrust and minimizes bit walking on entry
• Slow spiral flute geometry optimized for cast iron, stainless steel, titanium alloy, nickel alloy, and tool steel
• Bright, uncoated finish allows direct visual inspection of cutting edge condition
• Straight cylindrical shank fits standard drill chucks and collet-style tool holders
• Stub screw-machine length body reduces deflection in short-reach setups

Compatibility

Designed as an OEM-style replacement screw machine length drill bit for metalworking applications requiring a wire gauge size 7 (0.2010-inch diameter) solid carbide stub-length bit with a straight cylindrical shank.

Installation Notes

Installation is performed by machinists or tool-room technicians. Secure the straight shank fully in the chuck or collet before operation and verify runout before drilling into workpiece. Power down and lock out the spindle before changing bits. Carbide is brittle — avoid lateral loading or impact that can chip the cutting edge; use appropriate cutting fluid or coolant where the machine allows.