Chicago-Latrobe 46712 #42 135° Cobalt Jobber Drill Bit

Chicago-Latrobe 46712 #42 Cobalt Drill Bit

This Chicago-Latrobe 46712 drill bit is a jobber-length cutting tool made from HAWA cobalt material. It carries the #42 wire gauge size with a decimal equivalent of .0935 inches. The 135-degree split point is designed to reduce walking and start accurately on contact. It suits machinists and maintenance technicians drilling hard metals such as stainless steel or high-strength alloys.

Suited for hard-metal drilling.

The cobalt construction and 135-degree split point make this bit suitable for users who need wear resistance and self-centering starts in tough materials. Buyers who require coolant-through capability should look elsewhere because this bit has zero coolant holes. It is also not intended for applications that demand a different point geometry or a coated surface for specific material interactions.

135-degree split point defines the start behaviour

The single specification that decides fit is the 135-degree split point angle. This geometry determines how the bit engages the workpiece without a centre punch and how it manages chip formation in hard metals. If the drilling operation calls for a different point angle or a standard point without split geometry, this bit will not match the required cutting action.