Hertel 2386407 Screw Machine Drill Bit Size 33 Hss

Product Description

The HERTEL 2386407 is a screw machine length (stub length) drill bit designed for high-throughput drilling in metal fabrication, machining, and production environments. Built from high-speed steel with an oxide coating, the bit features a 135-degree split point that reduces walking on contact and requires no center punch for most applications. The web-thinned, parallel-web construction lowers thrust force and improves chip evacuation. At 1.875 inches overall length, this stub-length geometry provides added rigidity compared to jobber-length bits, making it well suited for short-hole work in drill presses, CNC machines, and screw machines.

This bit is sized to wire gauge Number 33, corresponding to a decimal diameter of 0.113 inches. It is used in production drilling of ferrous and non-ferrous metals, plastics, and composite materials where a short, stiff bit is preferred. The straight-cylindrical shank fits standard chucks without an adapter. The right-hand spiral flute direction is compatible with conventional clockwise-rotating spindles found on most production and bench drilling equipment.

Key Features

• 135-degree split point reduces drill walking and lowers required thrust force
• High-speed steel construction with oxide coating for improved wear resistance and lubricity
• Screw machine (stub) length body adds rigidity and reduces deflection in short-hole applications
• Web-thinned, parallel-web design promotes clean chip evacuation and cooler cutting
• Straight-cylindrical shank fits standard drill chucks with no adapter required
• Right-hand cutting direction for use with standard clockwise-rotating spindles

Compatibility

Designed as an OEM-style stub-length drill bit for use in screw machines, drill presses, and CNC drilling applications requiring a wire gauge Number 33 (0.113-inch diameter) straight-shank bit with a right-hand spiral flute.

Installation Notes

Installation and operation should be performed by qualified machinists or tooling technicians. Ensure the spindle is fully stopped and the machine is de-energized before inserting or removing the bit from the chuck. Confirm the chuck jaws are clean and properly tightened to the straight shank before beginning any drilling cycle. Always operate within the recommended RPM range for the workpiece material and bit diameter to avoid premature dulling or breakage.