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Expansion bolts for pre-drilling

Looking for a strong anchoring for beams or another heavy object? With the expansion bolts for pre-drilling from Wovar, you are assured of a very strong anchoring. This expansion bolt with push-through installation differs from that with push-through installation because it can be used on several surfaces. This expansion bolt can be used not only in concrete, but can also be fixed in natural stone, solid and hollow masonry, sand-lime brick and light concrete blocks. This is also known as the traditional expansion bolt.

As the name implies, the expansion bolt is placed by means of pre-drilling, which means that you first pre-drill a hole in the wall and then in the material to be attached. This makes it possible to easily attach the material after the expansion bolt has been placed.

Are these not quite the expansion bolts you are looking for? Then view our entire range of expansion bolts. Or if you are looking for a different type of anchoring, take a look at our impact plugs, frame plugs or frame screws. See also our expansion bolts for push-through installation.

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The premium brand for all your screws, bolts, and other hardware
More affordable than hardware stores
Fast delivery throughout Europe
The premium brand for all your screws, bolts, and other hardware
The premium brand for all your screws, bolts, and other hardware
More affordable than hardware stores
Fast delivery throughout Europe
The premium brand for all your screws, bolts, and other hardware
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Expansion bolts with pre-mounting are first pre-drilled in the substrate and later in the material to be fastened. The thickness of the hole to be pre-drilled depends on the thickness of the expansion bolt. Would you like to know which drill you use with these expansion bolts? Unlike the expansion bolts with push-through mounting, the diameter of the hole with expansion bolts with pre-mounting is larger than the thickness of the bolt itself.

Which drill for expansion bolt do I need?

For example, pre-drill M6 expansion bolts with pre-mounted installation with a 10 mm, M8 with a 14 mm, M10 with a 16 mm and M12 with a 20 mm concrete or hammer drill bit. The length of the borehole depends, of course, on the length of the expansion bolt. This also determines the thickness of the material to be attached. The longer the length of the expansion bolt, the thicker the material to be attached may be. This specific information can be found with each expansion bolt.

After pre-drilling, press the expansion bolt into the hole and, if necessary, hit it carefully with a hammer or sledgehammer. Then tighten the nut properly, you will notice that the expansion bolt does not turn. As the nut is tightened, the bolt expands on four sides and anchors itself firmly in the wall. After attaching, remove the nut and washer again so that you can attach the material to be placed. Place the object on the expansion bolt and fit the nut and washer. Tighten the nut so that the material is firmly attached to the wall or other surface.

Looking to order expansion bolts with pre-mounted installation?

Order expansion bolts with pre-mounting for the lowest price at Wovar. Wovar always supplies expansion bolts with pre-mounting from our own stock the next day! Construction companies, gardeners and handymen receive extra benefits such as a discount with a business account.

Are these expansion bolts not quite what you are looking for? Also view our expansion bolts with eye or expansion bolts with hook. In addition to expansion bolts, Wovar also supplies strong frame screws among other products.