Century Drill Tool Co Inc 74124 Lh Cobalt Stub Drill Bit 3/8 in

Product Description

The CENTURY DRILL TOOL CO INC 74124 is a left-hand cobalt stub drill bit designed for professionals who need to extract broken fasteners or drill in reverse rotation applications. Built from cobalt steel, this bit handles high-heat drilling without losing temper. It features a 135-degree split point that self-centers on contact, reducing the need for a center punch. The stubby mechanics length keeps the bit rigid and reduces deflection when working in tight engine bays or confined mechanical spaces. It measures 3/8 inches in diameter, with a flute length of 2.375 inches and an overall length of 4.125 inches.

This bit is suited for automotive technicians, machinists, and maintenance mechanics dealing with stripped or broken bolts, studs, and screws. The left-hand cutting direction causes reverse-rotation friction that often backs a fastener out before drilling is complete, saving time on extractions. The industrial polished finish reduces chip buildup in the flutes. It performs well in steel, stainless, cast iron, and other hard metals where standard HSS bits lose an edge quickly. This product is packaged as a quantity of 3 bits per package.

Key Features

• Left-hand cutting direction for fastener extraction and reverse-rotation drilling
• Cobalt steel construction for extended performance in hard and abrasive materials
• 135-degree split point self-centers and reduces walking without a center punch
• Stubby mechanics length increases rigidity and reduces deflection in confined spaces
• Industrial polished finish minimizes chip buildup and friction in the flutes
• Packaged in a quantity of 3 bits per unit

Compatibility

Designed as an OEM-style replacement or upgrade for 3/8-inch left-hand drill bit applications in standard drill chucks and drill press setups that accept straight-shank bits.

Installation Notes

Left-hand drill bits must be used in a drill set to reverse rotation to function correctly. Secure the workpiece before drilling to prevent spinning. Use appropriate cutting fluid when drilling hard metals to extend bit life and reduce heat buildup. Always wear eye protection when operating drill equipment.