Chicago-latrobe 69856 Cobalt Drill Bit Set 15 Pc

Product Description

The CHICAGO-LATROBE 69856 is a 15-piece cobalt screw machine length drill bit set engineered for demanding metalworking applications. Built from cobalt high-speed steel with a gold finish, these bits deliver superior heat resistance and edge retention when cutting through hard metals, stainless steel, and abrasive alloys. The 135-degree split-point tip reduces walking on contact and requires no center punch for accurate hole starts. Straight shanks fit standard drill chucks, and right-hand cutting geometry is compatible with conventional drilling equipment. This set is a working-trade staple for HVAC techs, pipefitters, electricians, and sheet metal mechanics who need reliable performance across a range of hole sizes in a single case.

The 69856 covers hole diameters from 1/16 inch to 1/2 inch in 1/32 inch step increments, providing 15 graduated sizes in one organized storage case. The screw machine length profile — shorter than standard jobber length — gives added rigidity and reduces deflection when drilling in confined spaces, tight enclosures, or on drill press fixtures. Intended for metalworking and multipurpose drilling tasks, this set suits both production shop environments and field service use where a broad size range must be on hand without carrying multiple individual bits.

Key Features

• Cobalt tool material for high heat resistance and extended tool life in hard metals
• 135-degree split-point tip eliminates walking and reduces required feed pressure
• Gold finish applied for surface hardness and corrosion resistance
• Screw machine length body provides added rigidity over standard jobber length bits
• Right-hand cutting, straight shank compatible with standard drill chucks
• 15-piece set in 1/32 inch increments from 1/16 inch to 1/2 inch in a metal or plastic storage case

Compatibility

Designed for use with standard straight-shank drill chucks on portable drills, drill presses, and milling machines used in metalworking and multipurpose drilling applications.

Installation Notes

Secure the workpiece firmly before drilling and ensure the drill chuck is tightened to rated holding capacity. Use cutting fluid or coolant when drilling hard or stainless alloys to extend bit life, even though these bits are rated for dry cutting. Inspect shank and cutting edges for damage before each use. Discard any bit showing cracking, excessive wear, or heat discoloration past the cutting edge.