Grip-Rite P158STWH67 PrimeGuard PLUS #8 x 1-5/8 in. White Star Drive Bugle Head Coarse Thread Coated Deck Screws feature a T17 point for easy, hassle-free installation. PrimeGuard Plus coating protects these fasteners from corrosion and rust, prolonging the life of your deck. Improved thread design and nibs under the drive head reduce slippage in your treated wood and wood to wood deck.