Westward 1/2" HSS Black Oxide 118° Jobber Drill Bit

Drill Bit for General Metalwork

This 1/2 inch high-speed steel jobber drill bit suits workshop tasks that require a standard 118-degree conventional point. The black oxide finish helps reduce friction and resist corrosion during everyday drilling in ferrous metals. Buyers who need cobalt or carbide tips for hardened steel should look elsewhere.

Straightforward Chuck Fit

The straight shank seats directly in any three-jaw chuck sized for 1/2 inch capacity, so no adapter or special holder is required. Ensure the workpiece is clamped rigidly; otherwise the conventional point can wander on hard or angled surfaces and the bit may overheat if feed pressure is excessive.

Limited by 118-Degree Geometry

The 118-degree point angle is optimised for mild steel and cast iron rather than stainless or exotic alloys, so chip evacuation slows in deeper holes. Black oxide provides modest lubricity but does not replace cutting fluid, and the absence of coolant-through channels means heat builds faster in prolonged cuts.