Simpson HUC66TF HUCTF Top Flange Concealed Flange Joist Hanger for 6x6 12 Ga G90 Galvanized OCB Ornamental Column Bases Less surface disruption on most Less surface disruption on most jobs because no drilling is required for most applications when ports are pasted directly to the concrete reducing the need for secondary cleanup work on hinge cup bores in finished or pre finished components Face nailing attachment allows the hanger to be securely fastened to the supporting member using standard nailing techniques this hanger features two concealed flanges that make it the practical choice for end of wall and corner framing applications where exposed hardware is not suitable