Draper HSS Metric Jobber Drill Bit 5.0 x 85mm (10 Pack) Steel - 5.0mm

This Draper HSS Metric Jobber Drill Bit is suitable for drilling into steel, cast iron, non-ferrous metals (like aluminum and brass), and plastic.

While it can technically cut wood, it is optimized for metal and plastic. For best results in wood, a brad-point or spade bit is recommended.

HSS stands for High-Speed Steel, a type of tool steel known for its hardness, resistance to deformation at high temperatures, and durability.

Clean the bits after use, store them properly to prevent rust, and use cutting fluid when drilling metals to prolong their life.

Jobber drill bits (like this one) are general-purpose bits with a standard flute length and helix angle, suitable for a wide range of common drilling tasks in various materials.

The correct speed depends on the material and drill size. Generally, use slower speeds for harder metals and larger diameters, and faster speeds for softer materials and smaller diameters. Refer to a drilling speed chart for specific recommendations.

No, this is a drill bit designed for creating holes, not for enlarging or finishing them to a precise tolerance like a reamer.

Ensure you are using the correct drill speed for the material. Check if the drill bit is dull; if so, replace it. Apply a cutting lubricant for metal applications.

Reduce drilling speed and apply cutting fluid or coolant. Ensure you are not applying excessive pressure.

Check if the drill bit is damaged or bent. Ensure the drill bit is held perpendicular to the workpiece and that the workpiece is stable.

Ensure the drill bit is securely tightened in the chuck and that the workpiece is firmly clamped. Check for runout in the drill chuck.