Chicago-Latrobe 50083 41/64 in 135° Cobalt Jobber Drill Bit

41/64 inch Cobalt Jobber Bit

This Chicago-Latrobe 50083 drill bit is a fractional-inch cutting tool made from cobalt steel for heavy-duty drilling. The 135-degree split point reduces walking and allows faster penetration in tough materials. It is designed for professional mechanics and machinists who need reliable performance in steel and alloys. The straw-bronze finish identifies the cobalt construction.

Upgrade from standard high-speed steel bits

Cobalt steel retains hardness at higher temperatures than standard high-speed steel, extending tool life when drilling stainless steel, titanium or nickel alloys. The split-point geometry eliminates the need for centre punching in many applications, saving setup time. The jump is worth it when heat buildup dulls conventional bits quickly or when precise hole starts are critical.

Suited for heavy-duty metal drilling

This bit suits maintenance technicians and fabricators drilling hard metals up to 41/64 inch diameter. The jobber length provides standard reach for general workshop use. Builders needing coolant-through capability, smaller pilot sizes or carbide-tipped longevity should look at other tooling options. The non-coolant design limits deep-hole chip evacuation in some materials.