Of the two, Throughbolts are often preferred because they may be used where the hole is drilled after the steel flange has been positioned, while Shield Anchors need to be installed before the flange is positioned.
Other styles of construction floor anchors, such as Sleeve Anchors and Drop-in Anchors, are also available designed for use in materials like concrete that do not take a thread and are resistant to screws or nails. These devices generally utilise a system for casting in place or for post fix (like throughbolts or shield anchors) by using an expanding wedge design, whereas embedded floor anchors (often referred to as Rag bolts) use a specially formed end for casting in place or for post fix using a 2-part resin injection system.
