Osg 650029611 Solid Carbide Stub Drill Bit 19/64 in

Product Description

The OSG 650029611 is a solid carbide stub-length drill bit designed for precision drilling in demanding machining environments. Built to Series 6500 specifications, this bit features a 140-degree split point with X-thinned web geometry that reduces thrust force and improves hole entry accuracy. The EgiAs finish provides enhanced lubricity and wear resistance, extending tool life in ferrous and non-ferrous materials alike. Coolant-through capability allows internal coolant delivery directly to the cutting zone, making this bit well suited for high-speed, high-volume production drilling. Licensed machinists and tool-and-die professionals are the primary installers.

This drill bit is sized at 19/64 inch (0.2969 inch decimal, 7.54 mm) and belongs to the stub or screw-machine length category, which provides increased rigidity compared to jobber-length bits. It is used in CNC machining centers, drill presses, and screw machine operations where hole tolerance and surface finish are critical. The straight-cylindrical shank seats directly into standard drill chucks or collet systems without adapters. Typical applications include production drilling in metalworking shops, tool rooms, and automated manufacturing lines where consistent hole quality is required across high-cycle runs.

Key Features

• Solid carbide construction for superior hardness and heat resistance compared to HSS or cobalt alternatives
• 140-degree drill point angle with X-thinned web reduces walking and improves self-centering at entry
• EgiAs finish enhances surface lubricity and extends cutting life
• Coolant-through design delivers coolant directly to the cutting edge for chip evacuation and thermal control
• Stub-length body increases lateral rigidity and reduces deflection in short-hole applications
• 2-flute spiral geometry promotes efficient chip removal in through-hole and blind-hole drilling

Compatibility

Designed as an OEM-style replacement or upgrade for stub-length carbide drill bits in the 0.2500 to 0.3000 inch (6.50 to 8.00 mm) size range used in standard drill chucks and collet holders accepting straight-cylindrical shanks.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the straight-cylindrical shank fully into the chuck or collet and torque the retention mechanism to the machine manufacturer's specification. Verify coolant-through passages are clear and that system pressure is within the machine tool's rated range before initiating a cut.