Cleveland C15887 Jobber Length Drill Bit Wire 54 Cobalt

Product Description

The CLEVELAND C15887 is a cobalt jobber-length drill bit designed for demanding metal-cutting applications where standard high-speed steel bits fall short. Built from M42 cobalt steel with an oxide coating, it carries a 135-degree split-point tip that reduces walking and allows drilling to begin without a center punch. The straight-cylindrical shank measures 0.0550 inches in diameter, matching the wire gauge size 54 decimal equivalent. A fast-spiral, two-flute geometry clears chips efficiently while maintaining rigidity in the short 1-7/8-inch overall length. This is a heavy-duty grade bit intended for professionals who drill superalloys, stainless steel, and other hard materials regularly.

This bit is sized for wire gauge 54, with a decimal diameter of 0.0550 inches. The flute length is 5/8 inches and the shank length is 1-1/4 inches. Its compact overall length of 1-7/8 inches suits close-quarters work in machinery frames, heat exchangers, and similar tight-clearance components. The M42 material grade and oxide finish make it a practical choice for shops and field technicians working with superalloys, titanium-adjacent alloys, and hardened steels where heat buildup shortens bit life quickly.

Key Features

• M42 cobalt steel construction for high heat and wear resistance in hard-material drilling
• 135-degree split point reduces thrust and eliminates the need for center-punching
• Oxide coating provides added lubricity and surface protection during cutting
• Fast-spiral, two-flute design promotes efficient chip evacuation
• Web-thinned, tapered web configuration improves cutting performance and reduces torque
• Conforms to ASME B94.11M and carries NAS specification designation

Compatibility

Designed as an OEM-style replacement or direct-use jobber-length drill bit for applications requiring a wire size 54 (0.0550-inch) diameter bit rated for superalloy and hard-metal drilling.

Installation Notes

This bit is installed in any standard drill chuck or collet that accepts a 0.0550-inch straight-cylindrical shank. Secure the shank fully in the chuck before operation and confirm runout is within acceptable limits for precision work. When drilling superalloys or hardened steels, use appropriate cutting fluid to manage heat and extend bit life. Drilling speed should be reduced compared to standard steel applications — consult published feeds-and-speeds references for the specific workpiece material.