Titan Usa CD50243 Cobalt Jobber Drill Bit No 43

Product Description

The TITAN USA CD50243 is a cobalt jobber-length drill bit in wire gauge size No. 43 (0.0890 inches), designed for drilling hard and abrasive materials in demanding shop and field applications. Built from cobalt steel with an oxide finish, this bit handles elevated cutting temperatures without losing hardness at the edge. The 135-degree split point geometry reduces walking on entry and lowers the thrust force needed to start a hole, making it well suited for hand drilling and drill-press work on tough substrates. Two spiral flutes in a regular helix clear chips efficiently throughout the 1.25-inch flute length. The straight-cylindrical shank (0.0890 inches in diameter) fits standard three-jaw chucks without adapters.

This bit is specified for drilling stainless steel, superalloys, and titanium — materials that work-harden quickly and destroy standard HSS tooling. It fits production and maintenance scenarios where a small-diameter, high-performance bit is needed in tight clearances or for pilot holes in hard plate. The 2.25-inch overall length (1.25-inch flute, 1.0-inch shank) gives adequate reach for most panel and structural drilling tasks in these material families. Machinists, toolroom technicians, and sheet-metal fabricators are the primary users.

Key Features

• Cobalt steel construction resists heat buildup when drilling stainless steel, superalloys, and titanium
• 135-degree split point reduces drill walk and lowers feed force at entry
• Oxide finish provides lubricity and corrosion resistance during cutting
• Regular spiral flute design promotes consistent chip evacuation to maximum drilling depth of 1.25 inches
• Straight-cylindrical shank fits standard drill chucks with no adapter required
• No-coolant-through design simplifies setup in open-air and portable drilling applications

Compatibility

Part of the TITAN USA CD50 Series, sized for wire gauge No. 43 applications requiring a 0.0890-inch diameter hole in stainless steel, superalloys, and titanium workpieces.

Installation Notes

Machinist or fabricator installation. Secure the straight-cylindrical shank firmly in a calibrated three-jaw chuck before use and verify runout is within acceptable tolerance for the diameter. When drilling stainless steel or superalloys, use a low RPM and consistent feed pressure to avoid work hardening the bore wall. Never force a dull bit — cobalt bits can be resharpened, but operating with a degraded edge on hard materials risks bit breakage and workpiece damage.