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Frequently asked questions
What is an anchor bolt?
An anchor bolt, also called expansion bolt, consists of a bolt with a sleeve around it. After inserting the anchor bolt in the wall and tightening the nut, the bolt retracts into the sleeve, causing the sleeve to expand. The sleeve then presses against the surrounding material, creating an incredibly strong connection with a high load-bearing capacity.
How do I use an anchor bolt?
First, drill a hole in the wall. The width and depth of the hole depends on the width and length of the anchor bolt. You will find this information on the product page of the anchor bolt. After drilling the hole, insert the anchor bolt and tighten the nut to expand the sleeve.
Which drill bit do I need for an M10 anchor bolt?
Which drill you need depends on the type of anchor bolt you are using. For a wedge anchor, you require a 10 mm drill bit for an M10 bolt. For sleeve anchors, you will need a 16 mm drill bit for an M10 bolt.
Which drill bit do I need for an M6 anchor bolt?
Which drill you need depends on the type of anchor bolt you are using. For a wedge anchors, you require a 10 mm drill bit for an M6 bolt. For sleeve anchors, you will need a 6 mm drill bit.
How do I remove an anchor bolt?
Removing an anchor bolt is very easy. Open the nut all the way, i.e. counterclockwise, and hit the bolt with a hammer. This causes the sleeve to shrink again and allows you to remove the anchor bolt.
How much should I tighten the anchor bolt?
When securing the anchor bolt, be careful not to tighten it too much. As soon as you notice that the nut is tight, you can stop. Trying to keep going could cause the brick or concrete to crack.
Which materials do I use with anchor bolts?
Anchor bolts can be used with various materials. The different types of anchor bolts can be used with different materials. A wedge anchor is only used with solid concrete. Sleeve anchors can be used with several materials, including natural stone, masonry, sand limestone, and brick.
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Do you want to mount a thick beam on the wall? Or do you want to anchor another heavy object to a stone wall or concrete? With the anchor bolts from Wovar you ensure an extremely strong anchoring of beams and hardware to stone or concrete. Roughly speaking, Wovar has two types of anchor bolts, namely with push-through mounting and with pre-drill mounting. The advantage of these wedge anchors is that you can mount your material directly. You do not have to fix this anchor bolt in the wall first and then apply the material to be anchored, but you can attach the anchor bolt directly through the material to be anchored. You do have to drill a pilot hole first.
How does an anchor bolt work?
Fastening anchor bolts is fairly straightforward. You drill the hole in the wall and the material to be anchored. Then use a hammer to secure the anchor bolt into the wall and firmly clamp the material to be anchored with the aid of a nut. Wovar sells anchor bolts M6, M8, M10 and M12 thick. The lengths vary from 60 to 250 mm long.
In addition to the wedge anchors, we also supply sleeve anchors. This refers to the more traditional expansion bolt. You must first anchor this type anchor bolt in the wall, so you can then mount the material to be anchored over the wedge anchor.
Which drill bit to use for wedge anchors?
Anchor bolts are usually only used for anchoring in concrete or solid stone. You can use our concrete drill bits or hammer drill bits SDS-plus for this. You determine the thickness of the drill based on the thickness of the wedge anchor you wish to use. Are you using an M6 bolt? Then choose a 6.0 mm hammer drill bit. Do you opt for anchor bolts M8? Then you use an 8.0 mm drill bit. This is also how it works with M10 wedge anchors and M12 bolts. The thickness of the drill is equal to the thickness of the expansion bolt.
The length of the drill depends on the length of the anchor bolt and the thickness of the material to be anchored. You should always make the hole 5 mm deeper than the length of the anchor bolt minus the thickness of the material to be anchored. This ensures that there is always enough space to attach the anchor bolt.
Drill bit for wedge anchors
For wedge anchors, the hole should be somewhat thicker, because the sleeve is somewhat larger than the thickness of the bolt itself. This is also indicated per wedge anchor. A few examples:
- An M6 sleeve bolt requires a 10 mm masonry drill bit
- An M8 sleeve bolt requires a 14 mm masonry drill bit
- An M10 sleeve bolt requires a 16 mm masonry drill bit
- An M12 sleeve bolt requires a 20 mm masonry drill bit
Eye bolts are very strong because they are made of galvanized steel. They provide a solid attachment due to the high clamping range of the sleeve, making them suitable for high loads. You use them for objects that have a hook, so that they can be pulled through the eye of the wedge bolt, such as shade sails.
These eye bolts are easier to assemble than you think. Pre-drill a hole in the wall, insert the eye bolt, and tighten the nut. As the nut is tightened, the sleeve will expand and anchor itself in the wall.
Hook bolts are most commonly used for shade sails. Shade sails provide wonderful cooling on days with a lot of sun. Hook bolts are installed in the same way as eye bolts. Depending on the thickness of the anchor bolt with hook, you drill a hole in the wall. With every hook anchor bolt is indicated which drill diameter and length you should use. These are also strong bolts and suitable for heavy loads.
Ordering anchor bolts online
Order the extremely strong anchor bolts at Wovar for the lowest price! Wovar supplies anchor bolts per piece with high volume discounts when purchasing a full box. Companies in the construction, DIY, and landscaping industry enjoy even more benefits. For example, with a business account, they get a business discount and access to a detailed order history.
Are anchor bolts not quite what you are looking for? Browse our coach screws and carriage bolts, or explore our entire range of fasteners, including deck screws, sealants, nails, plasterboard fixings, carabiners, and more.