Hertel 89320956 No. 50 Screw Machine Drill Bit Hss

Product Description

The HERTEL 89320956 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and plastic. Built from high-speed steel (HSS) with a bright, uncoated finish, it handles a wide range of shop and field drilling tasks. The No. 50 wire gauge size corresponds to a decimal diameter of 0.0700 inches. At 1-11/16 inches overall length, the shortened screw machine body provides added rigidity and reduced deflection compared to jobber-length bits, making it well-suited for close-tolerance work in drill presses, screw machines, and CNC applications. The 118-degree split point geometry promotes accurate starting and consistent hole quality across common workpiece materials.

This bit is a standard choice for machinists, tool-and-die workers, and maintenance technicians who require small-diameter, high-precision drilling in production or repair environments. The screw machine length format is commonly specified for automatic screw machines, turret lathes, and short-reach drill press setups where bit stub length reduces chatter and runout. The 0.0700-inch diameter falls within the 0.0000 to 0.1000 inch size range, making it appropriate for tapping pilot holes for small fasteners and fine clearance drilling in sheet metal or precision assemblies.

Key Features

• No. 50 wire gauge diameter — 0.0700 inches for precise small-hole drilling
• 118-degree drill point angle for accurate starting on flat and curved surfaces
• High-speed steel construction supports general-purpose use across metals, plastics, and wood
• Screw machine (stub) length body reduces deflection and improves rigidity in tight setups
• Bright, uncoated finish — no coating buildup to affect dimensional accuracy
• Right-hand cutting direction, compatible with standard drill press and CNC spindle rotation

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in standard drill chucks, screw machines, turret lathes, and CNC drilling applications accepting No. 50 wire gauge tooling.

Installation Notes

Installation and use should be performed by machinists or qualified trade personnel familiar with rotary cutting tool safety. Secure the bit fully in the chuck before operation and verify runout before production use. Always power down and lock out the machine before changing tooling. Use appropriate cutting fluid or lubrication when drilling ferrous metals to extend tool life and maintain hole quality.