Double expansion anchors for medium to heavy duty in concrete, block, brick and stone.
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Double Expansion Anchors
Installation Instructions for Double Expansion Anchors
The installation of double expansion anchors consists of three basic steps described below. These concrete expansion anchors work well in mediums of questionable strength. The dual expansion of these concrete anchors ensures high gripping power and full expansion. Expansion anchors can be removed or unfastened after installation if needed.
1. Drill hole of recommended diameter, see chart below, into the base material to a depth equal to, or slightly deeper than the length of the expansion anchor. Clean out the hole of all dust and cuttings.
2. Place the Double Expansion anchor, nut end first, into the hole. The top end of the anchor should be flush or slightly below the base material surface.
3. Place the object to be fastened over the anchor in the base material and bolt in to place.