100% MARINE GRADE STAINLESS STEEL & XYLAN COATED - Made from 100% Marine Grade 18-8 (304) Stainless Steel. 304 Stainless is a widely used standard in the marine construction industry because of the mix of durability and corrosion resistance. We also added an extra layer of corrosion resistance by coating the stainless steel in Black Xylan. Expect a lifetime of use in Saltwater, Freshwater, Indoor and Out! | DEEP CUT PHILLIPS, FLAT HEAD: Perfect for a counter sunk, flush finished look. These screws will leave no head exposed above the surface of material. Excellent for cabinets, decking, and other applications where a flush finish is desired. The phillips drive is also deep cut to help prevent head stripping. | BLACK XYLAN COATING: A plastic alloy coating used for the most demanding applications. Black Xylan has been used on oil rigs and the offshore industry for over 40 years to protect critical components from corrosion, chemicals, and temperature extremes. With a continuous operating temperature of between -420 F to +550 F, you can trust the Xylan to offer an extra layer of corrosion resistance to your already resistant fasteners. | DIMENSIONS: Diameter: #8 | Length: 1-1/2" | Thread Type: Coarse (standard) | Head: Flat Head |Quantity: 100 pcs | Material: 18-8 (304) Stainless Steel. | LIFETIME GUARANTEE: We are so confident that our product is the best on the market that we offer a NO HASSLE LIFETIME GUARANTEE.