Simpson Concealed Flange Heavy Face Mount Hanger HUC4.28 9 4 1 8 x 9 1 2 DIABST (SDS plus) Drop In Anchor Power Setting Tool minimizing wander and ensuring hole minimizing wander and ensuring hole placement accuracy in CNC and multi spindle boring setups 5mm plate thickness a robust steel body provides stability at operating speed Aesthetics and strength in one connector The concealed flange design is purpose built for exposed framing conditions where visible hardware would detract from the finished look The Simpson 4 1 8 x 9 1 2 Concealed Flange Heavy Face Mount Hanger is a heavy duty joist and beam connector built for structures requiring additional strength and higher safety factors