Acute tri-lock threadform and shank. Enhanced dual-start with opposing thread gives an easy straight drive. Stick-tite recess for maximum grip between bit and screw. Zinc and yellow-passivated. Double Self-Countersunk with Underhead Ribs TS Thread System...

Corrosion-resistant coating for use in outdoor applications. Unique Tri-Lock thread form to allow flex. Case-hardened. Single thread for reduced wood split. Partial thread eliminates deck to joist parting during insertion. Double-Countersunk for a Smooth...

Single thread, tri-lock, corrosion-resistant stainless steel deck, outdoor and marine screw for all pressure-treated timber and hardwoods. Spiral point penetrates timber surface, part thread prevents 'jacking-up' and no cam-out with square recess. Net-Coat...