05 Tips to Choose the Right Drill Bit for Anchors

Drilling an anchor hole is a common task in the house. There are dozens of drill bits, and many types of anchors are available in the market. Selecting the correct drill bit for using anchor size is difficult. After you refer this guide, you can find a suitable drill bit for any anchor you use.

Normally drill bit size is equal to the anchor diameter for the concrete anchors. For the plastic anchors, the drill bit will be a bit small considering the anchor diameter. For the drilling process, you can use the HSS drill bit with a hammer drill for drilling the anchor hole efficiently.

When you anchor, you should know the types of drill bits, types of drills, drilling speed and many more things related to preparing the drill hole for the anchoring process. In this guide, you can have it all in detail from the beginning. So let’s keep reading until the end!

Tip 01. Know Available Anchor Drill Bit Sizes

The anchor hole and anchor bit should be the same in diameter. Most anchors are designed with steel, zinc and aluminium. Those can hold maximum torque and force. Below you can see anchor sizes and anchor bit sizes in detail.

Anchor SizeAnchor Bit Size
1/4”1/4”
5/16”5/16”
3/8”3/8”
1/2”1/2”
5/8”5/8”
3/4”3/4”
7/8”7/8”
1”1”
1-1/4”1-1/4”
Anchor size Vs drill bit size (source)

Tip 02. Anchor Bit and Bore Hole Diameter Should Be Same

Why Do We Use Wall Anchors?

We have to create so many construction DIY projects in the house. Some are based on concrete, and some are based on the woods and sometimes we have to combine construction such as creating a wall rack mounting to the wall. At this time, we have to connect wood and wall together. We can use nails for this. But it is not safe. When we punch the nail, the wall can be damaged easily. So one and only the best option is using an anchor.

Anchor is a single or multi-material mounting tool. First, we have to prepare the drilled hole as an anchor put inside the drilled hole and then we can use a screw by tightening it. When the screw is driven inside the hole, it can be tight due to the less volume inside the drilled hole.

Anchor is always a secure way of connecting materials. When the screw tightens, its inside is also compressed due to the volume reduction, and it is tight completely. This will not damage the surface.

Wall Anchor and Drillbit Size

Wall anchors are of different types and are used for different tasks. Hence its diameter is also varied. Each anchor can be used for a specialised task. So you should know to select the anchor size and drill bit size for your task. Each anchor has a designed load. So when you choose an anchor make sure is it compatible with your job.

In the drilling process, we should drill sufficient holes for the anchoring process. If the hole diameter is high, the anchor will not fit tightly inside. If the hole diameter is lower, we are not able to insert the anchor. So each anchor type has recommended a pre-drilled hole.

Tip 03. Select Types of Anchors You Need

We are not able to select all kinds of anchors everywhere. It depends on the material, borehole and many more. So you can select the types of anchors for your task below.

  • Wedge Anchors
  • Seismic Wedge Anchors
  • Self-Threading Anchor
  • Expansion Anchors
  • Drop-In Anchors
  • Masonry Sleeve Anchors
  • Nail-drive Anchors
  • Hurricane Protection Anchor
  • All-purpose plastic plug anchors
  • Maxi-Set Anchors
  • SCOTS Anchors
  • Storm Guard Anchors
Types of anchors source Tapcon

Tip 04. Choose Suitable Drill Bit as An Anchor Bit

Always you should select an equal or higher diameter anchor drill bit with considering the anchor diameter. In-depth, follow this.

When we consider this process, we should need suitable drill bits for drilling the concrete, brick, stones and many more strength materials. There are types of drill bits such as wood drill bits, masonry drill bits, steel drill bits etc. These are used for specific tasks. Normally wood drill bits and steel drill bits are highly sharp, and masonry drill bits are not sharp much.

When we select a drill bit for the anchoring process, we should select the masonry drill bit made with carbide. The Carbide tip is high strength and heat resistance. So you must choose a carbide bit for an efficient drilling process. Carbide is applied as a tip of the drill bit, and some times end is fully made with carbide. This kind of drill bit is beneficial and it is durable.

Read More About – What Kind of Drill Can You Use For Concrete?

Tip 05. Choose a Suitable Drilling Machine for Bore Hole

After you select the proper drill bit, next you need to find a suitable drilling machine. There are types of drilling machines, such as hammer drills. Combi drill, SDS max, and SDS plus. Those are highly designed for hard drilling purposes, such as concrete, brick, stones and many more hard materials. The most efficient way to drill for anchors is using a hammer or SDS drill for bricks and concrete.

These tools are with a hammering mechanism. The hammering mechanism will ease the drilling process. A drill bit is moving forward and backwards in these tools, and it is really increasing the drilling speed and efficiency. So when you drill, you must select a hammer drill for your drilling machining.

When you consider user-friendliness you can use any cordless drill. All above drills are available as cordless. Hence no worry about power cords.

If you use a regular drill and drill bit, you have to stay much time to drill one hole.

Read More About – How to Use a Hammer Drill?- Safely and Durably Usage