Simpson Strong-Tie HUC616 Concealed Face Mount Joist Hanger The PA18 purlin anchor is

The PA18 purlin anchor is made of 12 gauge galvanized steel

reduce fastener slip and provide a greater net section when compared to bolts

The Simpson Strong-Tie HUC68 is a 6 x 8 concealed flange hanger made with 14 gauge galvanized steel

for use with machine thread bolts and screws

Simpson Strong-Tie HUC616 Concealed Face Mount Joist Hanger The PA18 purlin anchor isThe Simpson Strong Tie HUC616 is a 6 x 16 concealed flange hanger made with 14 gauge galvanized steel. Most models have triangle and round holes. To achieve maximum loads, fill both round and triangle holes with common nails. These heavy duty connectors are designed for schools and other structures requiring additional strength, longevity and safety factors.