Century Drill Tool 74107 Lh Cobalt Stub Drill Bit 7/64 in

Product Description

The Century Drill Tool Co Inc 74107 is a left-hand cobalt stub drill bit designed for demanding drilling and extraction applications in industrial environments. Built from premium cobalt steel, this bit handles hardened materials, broken fasteners, and high-heat drilling scenarios that standard high-speed steel bits cannot manage. The stubby mechanics-length body provides additional rigidity and strength in tight workspaces. The 135-degree split point geometry reduces walking and cuts through material with less feed pressure, making it a reliable choice for precision work in metal fabrication, automotive, and mechanical trades.

This left-hand cobalt stub drill bit is suited for professional use in automotive repair shops, machine shops, and general mechanical service environments. Its left-hand rotation makes it especially effective for removing damaged, seized, or snapped fasteners, as the bit tends to back out the fastener while cutting rather than driving it deeper. The industrial polished finish helps with chip evacuation during drilling operations. It is typically installed and used by machinists, automotive technicians, and maintenance mechanics who work regularly with broken bolt extraction.

Key Features

• Left-hand rotation for effective broken fastener and seized bolt extraction
• Premium cobalt steel construction for heat resistance and durability in hard materials
• 135-degree split point reduces bit walking and lowers required feed pressure
• Stubby mechanics length provides extra rigidity and strength in confined spaces
• Industrial polished finish promotes chip evacuation during drilling
• Package quantity of 4 bits per unit

Compatibility

Designed as an OEM-style replacement and standard-use left-hand stub drill bit for use in any 7/64-inch compatible drill chuck, suitable for hand drills, drill presses, and similar equipment used in mechanical and industrial applications.

Installation Notes

Left-hand drill bits are installed by licensed machinists and qualified mechanical technicians. Ensure the drill is set to reverse rotation before use, as left-hand bits require counter-clockwise operation. Secure the workpiece firmly before drilling to prevent movement. Always wear appropriate eye protection and follow applicable workplace safety standards when drilling hardened or unknown materials.