Chicago-Latrobe 47377 118° Jobber Drill Bit 17 mm

17 mm Jobber Drill Bit

The Chicago-Latrobe 47377 is a general-purpose jobber length drill bit sized at 17 mm. It is designed for machinists and maintenance technicians who need a reliable high-speed steel tool for everyday drilling tasks. The conventional point geometry suits a wide range of standard materials.

118 Degree Point Angle Limits

The 118 degree point angle provides effective centring and chip ejection in mild steel, aluminium and plastic. It is less suited to very hard alloys or deep-hole drilling where a split point or specialised geometry would reduce thrust and heat. The black oxide finish aids lubricity but does not replace cutting fluid in demanding cuts.

Capacity And Headroom At 17 mm

At 17 mm diameter the bit handles typical workshop holes up to several times its diameter in softer metals. The high-speed steel body offers good wear resistance for repetitive work, though material removal rate drops in stainless or hardened stock. The non-coolant design means chip clearance relies on periodic withdrawal in deeper holes.