stainless steel wedge expansion anchors, which are designed for consistent performance in cracked and uncracked concrete. Both the SD4 and SD6 have ICC building code approvals that were designed f ...

The flat-headed sleeve anchor is a good choice when working to fasten to dense solid concrete to light hollow ... the cone shaped internally threaded stud upwards and expands the sleeve against ...

Unfortunately, studs are seldom ... and even hollow concrete block. Here's a detailed look at my four favorite types of anchors. Better known as molly bolts, expandable metal anchors consist ...