![]() The blue Tapcon® are only 3/16" and 1/4" in diameter compared to other anchors that may be 3/4", 7/8" or 1". Tapcon® fasteners are considered a light duty fastener as compared to other types of masonry or concrete fasteners.If the application calls for the screw to sit flush with the surface, then the flat countersunk Phillips drive Tapcon® should be used. The hex head Tapcon® masonry screw, once installed, sits with the head above the surface of the material being fastened.Does the head need to be flat with the surface of the item being attached?.A large diameter tapcon requires, in most cases, a 1/16" larger hole than the designated diameter. The 410 stainless steel is different and requires a 5/16" hole for the 1/4" diameter, and a 1/4" hole for the 3/16" diameter. The standard blue 1/4" Tapcon® requires a fixture hole of 1/4" the 3/16" Tapcon® requires a 3/16" hole in the fixture. The hole must also be drilled with the item in place. The size of the hole in the fixture is important because, once in place, the screw must be inserted through the hole and into the concrete.What is the size of the hole in the item being attached?.The following information may help to clarify commonly asked questions about the Tapcon®: ![]()
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