Flat head design with self-countersinking nibs provides a finished look in one step.
Genuine Robertson® Square Drive recess eliminates bit slippage and camout.
Coarse thread design offers maximum holding power.
Type-17 self-drilling point eliminates splitting and reduces the need for pre-drilling.
305 grade stainless steel provides optimum strength and corrosion resistance.
Now Available POWDER COATED - RED - WHITE - - GREY - TAN -
Seamaster® For the “ultimate” in corrosion protection use our Seamaster® line. We have added many features and benefits to this fastener, making it one of our most popular products. We use only high grade 305 stainless steel to produce our Seamaster® line. We start with an aggressive coarse thread design and a Type-17 self-drilling cutter point to reduce driving torque and eliminate splitting and bursting. Next, we added a flat head design with nibs built under the head to self-countersink the screw without the need for pre-boring. Finally we have utilized the original Robertson® square drive recess for optimal performance and driver bit engagement. If you want the highest quality fastener available for use in your outdoor project, our Seamaster® line is second to none.