3 8 16 x 3 3 4 STRONG BOLT® 2 Cracked and Uncracked Concrete Wedge Anchor Mechanically Galvanized Box (50) 6 Lobe Trim Head Simpson Deck Drive™ DWP WOOD Screw 316 Stainless Steel Tan 03 The recessed T40 6 lobe drive The recessed T40 6 lobe drive ensures positive bit engagement 050 Button Head Steel Rivet Steel Mandrel Carton (3000)The Button Head Steel Rivet with Steel Mandrel is a reliable fastener designed for strength and durability in demanding applications It has the same dual undercutting embossments on each clip segment as the zinc electroplated version the STB2 MG anchor is tested in uncracked concrete in accordance with AC193 and also in uncracked masonry in accordance with AC01