Chicago-Latrobe 48516 Screw Machine Drill Bit 1/4 in 118 Degrees Point

Chicago-Latrobe 48516 Drill Bit

This Chicago-Latrobe 48516 drill bit is a screw machine length tool designed for general-purpose drilling in metal and other materials. It suits machinists, maintenance technicians and hobbyists who need a reliable high-speed steel bit for standard drilling tasks. The bright uncoated finish provides a cost-effective option for everyday workshop use.

1/4 inch capacity and 118 degree point

The bit features a 1/4 inch diameter with a decimal equivalent of .2500 and a conventional 118 degree point angle. This geometry handles a wide range of common materials including mild steel, aluminium and plastic with good centring and chip evacuation. The screw machine length offers rigidity for portable drilling but lacks the reach of jobber or taper length bits for deep holes. The right-hand cutting direction matches standard drill chucks and the non-coolant-through design limits use in high-volume production with through-spindle cooling.

Upgrading from worn or smaller bits

This bit replaces dull, damaged or undersized drill bits in a 1/4 inch size. The jump is worth it when a sharp high-speed steel edge restores clean hole quality and cutting speed in maintenance or light fabrication work. It is not for buyers needing coated bits for extended life in abrasive alloys, coolant-through capability for deep hole drilling, or left-hand cutting direction for extractor applications.