#8 x 1 5 8" Simpson Strong Tie Square Drive Bugle Head Wood Screw 316 Stainless Steel, Pkg. 1 Lb. GDP Gas Actuated Concrete Pins W Fuel Cell Two versions of the MASA Two versions of the MASA are available the standard MASA for installation on standard forms and the MASAP for panelized forms Simpson Strong Tie HST Heavy Strap Ties are engineered to provide high capacity reinforcement for wood framing connections in structural applications requiring increased strength and load transfer Simpson Bugle Head Wood Decking Screw Square Drive available in Type 316 or Type 305 Stainless Steel with coarse threads on approximately 2 3 of the shank draw the decking and other material tightly to the framing The Type 17 point is for fast starts and the square drive creates easier driving and longer bit life