Titan Usa CD50309 Cobalt Jobber Drill Bit Letter I

Product Description

The TITAN USA CD50309 is a cobalt jobber-length drill bit sized to Letter I (0.2720 inches diameter) for demanding metal drilling applications. Built from cobalt steel with an oxide and TiN coating, it handles the heat and work-hardening associated with stainless steel, superalloys, and titanium. The 135-degree split point self-centers on contact, reducing walking and eliminating the need for a center punch on most setups. At 4.125 inches overall length with a 2.875-inch spiral flute, this bit follows the standard jobber-length proportion and fits a straight-cylindrical shank into any standard drill chuck without adapters. Machinists, maintenance technicians, and fabricators rely on this geometry for production and repair drilling in tough materials.

The CD50309 is used in machine shops, fabrication facilities, and field maintenance applications where stainless steel, titanium, or high-nickel superalloys are common workpiece materials. The regular spiral flute clears chips efficiently during through-hole and blind-hole drilling. With a maximum drilling depth of 2.875 inches and a 1.25-inch straight shank, it seats securely in drill press chucks, hand drills, and CNC tool holders sized for a 0.2720-inch shank diameter.

Key Features

• Cobalt steel construction resists heat buildup when drilling stainless steel, superalloys, and titanium
• 135-degree split point self-centers and reduces thrust force compared to conventional 118-degree geometry
• Oxide and TiN coating extends surface hardness and tool life
• Regular right-hand spiral flute with 2-flute configuration promotes chip evacuation
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters
• Diameter tolerance of -0.0010 to +0.0000 inches ensures consistent hole sizing

Compatibility

Designed as an OEM-style jobber drill bit compatible with standard drill presses, hand drills, and CNC spindles accepting a 0.2720-inch straight-cylindrical shank. Intended for use in the Letter I drill size range of 0.2500 to 0.3000 inches.

Installation Notes

Installation and use should follow standard machine shop or drilling safety practices. Secure the shank fully in the chuck and verify chuck key is removed before powering the machine. Recommended for use with appropriate cutting fluid or coolant to manage heat when drilling stainless steel or superalloys, as this bit does not have through-coolant capability. Wear appropriate PPE including eye protection whenever operating drilling equipment.