Chicago-Latrobe 44931 31/64 in 135° Cobalt Drill Bit

Chicago-Latrobe 44931 Cobalt Drill Bit

This 31/64 inch cobalt jobber length drill bit is built for heavy-duty drilling in tough materials such as stainless steel and high-strength alloys. The split point design provides accurate starting without a centre punch, reducing walk on hard surfaces. It suits professional mechanics and fabrication shops that need reliable performance in demanding applications.

135 Degree Split Point Capacity

The 135 degree split point handles high cutting forces and resists chipping when drilling abrasive or work-hardening metals. Cobalt construction maintains hardness at elevated temperatures, giving extended life in production runs. The bit reaches its limit in extremely deep holes where chip evacuation becomes difficult without coolant through holes.

Jobber Length Build Fit

Jobber length proportions fit standard drill chucks and quick-change adapters without requiring extended holders. The straight shank allows use in both portable drills and fixed drill presses. The TiAlN coating reduces friction and heat buildup, freeing the operator from frequent lubrication stops during repetitive drilling tasks.