Description
Screw Size #8 (0.164") - Straight Pilot Drill size for Soft Wood 7/64 . Straight Pilot Drill size for Hard Wood 1/8 Screw length measured from top of flat to tip of screw 1-1/4" (1.25") - Screw head Diameter 0.340" #2 Robertson Drive ( Square ) Made of highly corrosion resistant 316 Marine Grade Stainless Steel. Type 316 is also used extensively for surgical implants within the hostile environment of the body. Deck screws have a type-17 (auger type) thread cutting tip for installation into decking materials. They have bugle heads that allows the screw to depress the wood surface