Chicago-Latrobe 78608 3/8 in 140° Solid Carbide Straight Flute Drill

Chicago-Latrobe 78608 Carbide Drill Bit

The Chicago-Latrobe 78608 is a solid carbide straight flute drill bit sized at 3/8 inch with a 140 degree point angle. It is built for machinists and maintenance technicians who need a rigid tool for drilling hardened or abrasive materials. The bright uncoated finish and 4 facet point geometry support accurate hole placement and consistent chip evacuation in CNC or manual operations.

Straight Flute Geometry and Material Benefits

The straight flute design combined with solid carbide construction provides high rigidity and heat resistance during cutting. A 4 facet point reduces walk at entry and improves centring without a pilot hole. The uncoated bright finish avoids coating buildup in non-ferrous or gummy materials while the flute length of 1 13/16 in supports standard drilling depths.

Capacity and Application Limits

This drill handles general purpose drilling in steel, cast iron and non-ferrous alloys where coolant or flood lubrication is available. The 140 degree point angle suits a wide range of workpiece hardness but is not optimised for deep holes beyond the flute length or for high speed drilling in stainless steel without pecking. Users requiring coolant-through capability or coated performance in exotic alloys will need a different tool configuration.