Titan Usa MS99165 Cobalt Drill Bit Set 115 Pc

Product Description

The TITAN USA MS99165 is a 115-piece cobalt screw machine length drill bit set covering wire sizes 60 through 1, letter sizes A through Z, and fractional inch sizes 1/16 through 1/2 inch. Each bit is ground to a 135-degree split-point tip, which self-centers on contact and reduces walking on hard or slick surfaces. The cobalt steel construction handles elevated temperatures generated when drilling stainless steel, cast iron, hardened alloys, and other difficult materials without losing edge hardness. Bits have straight shanks and right-hand cutting geometry. The complete set ships in a metal index case and weighs 7.1 pounds. It is suited for machinists, pipefitters, maintenance mechanics, and fabrication shops that need a full-range drill index on hand.

Screw machine length drill bits are shorter than jobber-length bits, which increases rigidity and reduces deflection in drill press, CNC, and turret lathe applications. This set is a standard fit for machine shop benches, fabrication cells, and maintenance departments where a broad size range must be available for daily work. The 115-piece count covers virtually every wire, letter, and fractional increment a trade technician or machinist would need for clearance holes, tap drill sizing, and general metal fabrication across residential and light industrial settings.

Key Features

• 115 pieces covering wire sizes 60-1, letter sizes A-Z, and fractional sizes 1/16 to 1/2 inch
• Cobalt steel construction for drilling stainless, cast iron, and high-alloy materials
• 135-degree split-point geometry self-centers and reduces walking without a pilot punch
• Screw machine (stub) length increases stiffness and reduces deflection versus jobber-length bits
• Straight shank fits standard drill chucks and collets without adapters
• Right-hand cutting direction; no coolant-through feature, suitable for conventional flood or dry cutting
• Metal index storage case keeps bits organized and protected between uses

Compatibility

Designed as a general-purpose cobalt drill bit index for use in standard three-jaw drill chucks, collets, and keyed chucks accepting straight-shank bits up to 1/2 inch diameter.

Installation Notes

Drill bit sets of this type are installed and serviced by machinists, pipefitters, millwrights, and maintenance mechanics. Ensure the drill press, mill, or hand drill is powered down and the chuck is fully tightened before operation. When drilling hard alloys with cobalt bits, use appropriate cutting fluid or coolant to extend bit life and maintain tolerance. Follow applicable OSHA and shop safety standards for eye protection and workpiece clamping.