#1 square recess drive and trim head with a Type 17 tip for faster starts and to resist splitting in hardwoods. Coarse threads run approximately 2/3 up the shank to draw the decking tightly to the substrate. Pre-drilling is recommended near board-ends to reduce splitting. Use only with stable woods and wood substitutes for less noticeable fastening. Slender #7 shank is designed for finish work and trim. 316 stainless steel is recommended where superior corrosion resistance is needed.

Durable, powder-coated finish – painted heads blend with decking material. 0.230" diameter #1 square drive, trim head. Type-17 point for fast starts. Coarse threads approximately 2/3; up the shank draw the decking tightly to the substrate. Slender #7 shank for finish work and trim. Pre-drilling recommended near board ends to prevent splitting. Use with stable woods and wood substitutes when screw heads need to be hidden. Choose type 316 for seaside applications and superior corrosion resistance.