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Q: What other names are these type of anchors called?
A: Tapcon, concrete screw, self tapping concrete screw, concrete
screws, the original tapcon, con-sert screw, consert screw, confast
screw, ruff-nex, kwik-con, tapper, titan, masonry screw, blue screw,
cement screw, stainless steel concrete screw.
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Q: How do I determine the size bit I need for my Tapcon® screw
purchase?
A: For the 1/4” screw, purchase a 3/16” bit. For
the 3/16”screw, purchase a 5/32” bit.
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Q: I have to remove a previously installed tapcon screw and then
reinstall. Can I use the same Tapcon® and the same hole for this
project?
A: In most cases a screw can be removed and reinserted, however
there are some things to take into consideration. What condition are
the threads in after removal? What type of base material are working
in and what condition is the hole in? Changes to the original condition
of these factors will affect holding values and at times result in
an anchor not having any holding value left at all.
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Q: Which Tapcon® screws should be used to secure into ACQ
treated lumber?
A: Both the CreteFlex and the blue stalgard are ideal for
securing into ACQ treated lumber.
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Q: What formula do I use to determine the length of the concrete
screw appropriate for my project?
A: Suitable length can be determined by taking the thickness
of the material being attached and adding 1/4 ”. Number should
produce a minimum of
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Q: How do I calculate minimum embedment?
A: Minimum embedment for each concrete screw is different.
The basic rule is that it should be 1/4" deeper then the penetration
of the screw in the base material. Like screw length, it should be
no less than 1” and no more than 1-3/4”.
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Q: What is the benefit of the blue Stalgard coating on Tapcon®
screws?
A: The blue coating that comes standard on Elco brand Tapcon®
concrete screws is designed for superior corrosion resistance.
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Q: What sizes come in stainless steel?
A: Both flat and hex head 1/4 ” diameter concrete screws
come in stainless steel.
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Q: Can I fasten directly into a block wall or should I secure
the concrete screws into the mortar joint?
A: You can do either. The determination should be based on
the quality of the mortar and block.