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Q: Why is the drop in anchor referred to a 1/4,3/8,1/2,5/8 and 3/4?
A: That dimension refers to the diameter of the bolt or threaded rod that fits into the drop-in anchor. All female anchors are described in
this way.
Q: Why is the hole size so much larger than the anchor size?
A: The hole size matches up with the outside diameter of the anchor. For example: a 3/8’ drop-in anchor, has an internal thread
diameter of 3/8’ the outside diameter of the anchor is 1/2 ” so the hole in the concrete needs to match the outside diameter of the
anchor of 5/8”
- Q: Can I put the anchor into the concrete deeper than the minimum embedment?
A: Yes and the holding values can be slightly better the deeper the embedment.
Q: Can I use the drop-in anchor in other base material then concrete?
A: No, the drop-in anchor needs to be used in only solid concrete base material.
Q: Do the drop-in anchors come in Hot-dipped galvanized plating?
A: No, they are available in zinc plated and stainless steel.
Q: What are the internal threads in the drop-in anchor?
A: UNC, ie 1/4”-20
Q: Do I need to have a setting tool and how does the setting tool work?
A: Drop-in anchors have to be preset. This allows the bolt or threaded rod to be removed and reinserted if needed. The setting
tool works by inserting into the anchor as the anchor sits in the concrete. A hammer is used to strike the setting tool until the lip of the
anchor meets the lip of the setting tool.
Q: Does a setting tool come with the anchors?
A: No, the setting tool needs to be purchased separately.
Q: How many setting tools do I need?
A- The setting tool is a piece of smooth dowel made from steel. It can last a long as long as it does not get broken.
Q: What other names are these type of anchors called?
A: Drop-in, dropin, female anchor, hdi, Hilti drop-in anchor, concrete drop in anchor, sup-r-drop, HDI anchor, lip drop-in anchor, HDI-L anchor,
HDI-P anchor, thunderdrop, multi-set, concrete anchor, mini drop-in, coil thread drop-in.