Drill Bits

Drill bits are important tools that help users create holes in various materials with precision and efficiency. Different types of drill bits are designed to address specific tasks and materials, ensuring optimal performance and results.

Discover Alpha’s diverse selection of drill bits which encompass a variety of different types and functionalities.

Within our selection, you can find a variety of drill bit options to suit a wide range of drilling needs. These include jobber drill bits suitable for both standard and heavy-duty drilling applications; reduced shank designed for larger hole diameters; hex shanks that facilitate swift transitions between different power tools; long drill bits for drilling at greater depths; single and double-end panel drills designed for creating holes for rivets in both flat and curved panels; stub drills crafted for shallow hole drilling; morse taper shank drills for direct integration into the spindle of a drill or a lathe tailstock; screw extractor bits to adeptly remove stripped or damaged screws; spot weld drills engineered to extract spot welds with minimal impact on the material; and step drills for drilling multiple sizes in a single operation.

We also have a plethora of different sets and kits that can suit a range of different needs and applications.

Dive into the world of precision drilling and explore our comprehensive array of drill bits, each tailored to meet specific demands and ensure exceptional results.

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What is a drill bit?

Drill bits are tool accessories that are placed on the end of power drills that allow you to cut holes in different materials. These holes are usually circular but can differ depending on what kind of bit is being used. Some specialised bits can cut holes in other shapes for specialised purposes.

What are the key differences between the various Jobber drill bit series?

The Gold Series is ideal for the widest range of materials, including steel, wood, plastic and stainless steel. Its titanium nitride coating reduces heat and increases lubricity for extended life. Independent controlled testing has proved that the Alpha Gold Series drill outperforms other drills on the market by up to 30%. The 135-degree split point cuts faster and reduces wandering. Silver Series is ideal for general-purpose drilling steel, wood and plastic and has a 118-degree split point which reduces wandering. Black Series is ideal for hard metals, wood and plastic. The black oxide coating maximises lubricant hold, therefore, assisting chip flow and heat dissipation. It has a corrosion-resistant finish and coolant is recommended when drilling hard metals. The 118-degree split point reduces wandering. Cobalt is ideal for heavy-duty drilling stainless steel, high tensile steel and cast iron. Fully ground HSS Cobalt increases strength and drill life. The 135-degree split point cuts faster and reduces wandering. Reduced Shank is ideal for the widest range of materials including steel, wood, plastic and stainless steel. The black oxide coating maximises lubricant hold, therefore, assisting chip flow and heat dissipation. The 3 flats on the shank prevent slippage in the chuck and the 118-degree split point is ideal for drilling into pilot holes.

What drill bit should you use?

Jobber Drills: For general-purpose drilling, making holes in the material. Centre Drills: To produce a hole to support work in a lathe or turn between centres. Long Series Drills: Longer flute and overall length for drilling deeper holes. Extra Long Series: Extra-long flute and overall length for drilling extra deep holes. Reduced Shank: Has a shank with a smaller diameter than its cutting head, meaning it can drill large holes while still being compatible with standard-size drill chucks. Panel Drill: Used in drilling holes for fasteners such as rivets. Double Panel drill: Has cutting edges on both ends. They can drill more holes before they need to be resharpened than single-ended drill bits. Stub drill: Can make various-sized holes, but can be used to create a larger blunt tip for an enlarged drilled hole. Taper Shank: Securely attaches drill bit tools to the drill press machine spindle. Step Drills: Used to drill metal up to 1/4 of an inch thick. Allows you to drill multiple-sized holes with one bit. Each step on the bit is larger in diameter than the step before. Spot Weld Drills: For drilling out spot welded panels. Left-Hand Drills: For the removal of damaged bolts and screws. Screw Extractors: Reverse tapered cutting screw thread, with the square end used for tapping handles. Hex Drill Bits: Can lock into impact drivers and can handle a higher torque rating, meaning the job gets done faster.