Chicago-Latrobe 41793 135 Degree Jobber Drill Bit W .3860

135 Degree Heavy-Duty Jobber Drill Bit

This Chicago-Latrobe jobber length drill bit features a 135 degree split point for accurate starting and reduced walking. The high-speed steel construction with titanium nitride coating increases hardness and wear resistance. It is manufactured to a decimal equivalent of .3860 inch in letter size W. The bit is designed for non-coolant through applications.

General purpose metal drilling in steel and alloys

The split point geometry suits machinists and maintenance technicians who need reliable hole placement without a centre punch. The TiN coating extends tool life in ferrous materials and abrasive alloys. Buyers requiring coolant-fed drilling or carbide substrate for hardened steels should select a different tool.

Sustained cutting in production and maintenance

Under continuous use the TiN surface reduces friction and heat build-up at the cutting lips. The heavy-duty web thickness maintains rigidity during deep hole drilling at jobber length. Consistent feed rates preserve the 135 degree point geometry longer than standard bright finish bits.