Micro 100 SPD-375-140X Spotting Drill 0.375 in 140 Deg

Product Description

The MICRO 100 SPD-375-140X is a solid carbide spotting drill designed to create precise starter points for follow-on drilling operations. It features a 140-degree drill point angle, which is well suited for accurately locating holes before full-depth drilling with standard twist drills. The cutting diameter is 0.375 inches with a matching 0.375-inch straight-cylindrical shank. An AlTiN coating provides heat resistance and extended tool life in ferrous and hard materials. This is a single-ended tool intended for use in CNC machining centers and manual mills by machinists working on general-purpose metal fabrication and precision part production.

This spotting drill is used in general-purpose metal cutting applications where accurate hole location is required before drilling, countersinking, or tapping. The 140-degree point angle matches common twist drill geometries, reducing walkout and improving positional accuracy. With a 1.0-inch flute length, 2.5-inch overall length, and a 25-degree helix angle with two spiral flutes, it fits standard toolholders and collet chucks used in typical shop setups. It is appropriate for both production runs and one-off machining tasks in ferrous and non-ferrous metals.

Key Features

• 140-degree drill point angle matches standard twist drill geometry for accurate spot location
• Solid carbide construction delivers rigidity and wear resistance in hard materials
• AlTiN coating improves heat resistance and extends tool life in ferrous metals
• Two spiral flutes with a 25-degree helix angle promote chip evacuation
• Straight-cylindrical shank fits standard collet chucks and toolholders
• Single-ended design for right-hand cutting direction

Compatibility

Designed as a general-purpose spotting drill for use in CNC machining centers and manual milling machines that accept a 0.375-inch straight-cylindrical shank toolholder or collet.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and locked out per standard shop safety practice. Ensure the shank is clean and fully seated in the collet or toolholder before tightening. Use appropriate cutting fluid or coolant for the workpiece material to protect the coating and maintain tool life. A qualified machinist or CNC operator should verify runout and alignment before production use.