Engineered with no-strip star drive technology, these screws are twice as durable as comparable Philips-drive alternatives. Countersinking nibs under the head of the screw cut a perfect finished hole by transporting wood fibers out and sealing the surface. Serrated threading reduces drive torque. The black ceramic coating provides superior rust and corrosion resistance with 4 layers of protection - a zinc layer, a chemical adhesion layer, an epoxy coating, and a durable protective finish. This coating protects against weather as well as corrosion due to chemicals found in treated lumber. The 4-layer coating also exceeds 1,000 hours in salt spray testing. DeckPlus Black Ceramic Exterior Wood & Fence Screws (#10 x 2-1/2") - 40 Pieces Fast-start self-drilling point prevents splitting and eliminates the need for predrilling Flat head leaves a clean, even finish Black painted ceramic coating 4-layer coating provides superior rust and corrosion protection Star drive prevents stripping FREE T25 star bit included in package Recommended for use with cedar or ACQ, CA, and CCA treated lumber Limited lifetime warranty against rust & corrosion
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