Mitsubishi 662768 Screw Machine Drill Bit 140 Deg Carbide

Product Description

The MITSUBISHI 662768 is a screw machine length drill bit constructed from solid carbide for use in demanding machining and drilling applications. Screw machine length bits are shorter than jobber-length equivalents, providing greater rigidity and resistance to deflection when drilling in CNC machining centers, turret lathes, and screw machines. The 140-degree split point reduces thrust and centers the bit without a pilot hole. With a bright uncoated finish and right-hand cut, this bit suits high-precision work where coating buildup tolerance is a factor. Licensed machinists and tool-and-die professionals are the primary installers and users.

This drill bit is suited for production drilling environments including CNC machining centers, automatic screw machines, and manual turret lathes. Its rigid stub-length geometry makes it appropriate for through-hole and blind-hole operations in ferrous and non-ferrous metals where dimensional accuracy is critical. The straight shank allows direct chuck mounting without additional toolholding adapters in standard drill chucks and collet chucks.

Key Features

• Solid carbide construction provides hardness and wear resistance for high-volume production drilling
• 140-degree point angle reduces entry thrust and self-centers without spotting
• Screw machine length body increases rigidity and minimizes deflection versus jobber-length bits
• Bright uncoated finish maintains tight tolerances and suits applications sensitive to coating thickness
• Right-hand cut with regular spiral flute for consistent chip evacuation
• Straight shank for direct mounting in standard chucks and collet systems

Compatibility

Designed as an OEM-style replacement or production-use solid carbide screw machine length drill bit for use in standard straight-shank drill chucks and collet holders on CNC machining centers, turret lathes, and automatic screw machines.

Installation Notes

Installation and use should be performed by qualified machinists familiar with cutting tool setup and machine operation. Secure the straight shank fully in the chuck or collet before operation and verify runout with a dial indicator where tolerances are tight. Power down and lock out the machine before changing tooling. Refer to the machine manufacturer guidelines and applicable shop safety standards when selecting speeds and feeds for the workpiece material.