More Info on Drill Bits
Drill bits are cutting tools that are used with drills to create holes in various materials. They come in many different sizes and are usually connected to a drill, which rotates them and provides torque and axial force to create the hole. Drill bits feature a spiral, pointed angle, lip angle, and length.
- The spiral is used to keep holes from clogging.
- The pointed angle is used to control wandering, chatter, hole shape, and wear rate.
- The lip angle determines the amount of support provided to the cutting edge.
- The length determines how deep a hole can be drilled.
Choose from an assortment of bits to best suit your needs.
- Brad Point or Dowel Bits – these are wood drill bits that have a small point at their tip. Spurs on each side make it easy to make a clean and straight cut.
- Auger Drill Bit – have a circling shaft and a threaded point. These are usually used to cut large and deep holes.
- Wood Spade or Paddle Bit – it looks like a flat headed screwdriver but has a fine sharp point at its tip. The paddle shaped blade allows it to cut wide holes.
- Metal Drill Bits – also known as high speed steel bits are recognizable by their dark black color. They are usually used for metalwork and will last longer if it is only applied to metal, but they can be used on plastic and wood as well.
- Masonry Drill Bit – as the name suggests this bit is mostly used for masonry or stone work. The tip is usually given a hardened coating for a tougher bit.
- Countersink Bit – these bits are known for their ability to cut a space for fasteners and are perfect to prevent wood from cracking while you drill.
- Tile and Glass Bit – looks like a tiny spear and is able to cut through glass and tile.
HomElectrical carries a full assortment of drill bits in many sizes and with a variety of tip types for your convenience. Find the drill bit that's right for your application with HomElectrical, the electrical supply store.