Package includes 20 boltsDrive in with a 7/16" Socket304 stainless steel for corrosion resistanceSuitable for indoor or outdoor useBCP Fasteners are always backed by a 100% satisfaction guaranteeHex bolts, also called hexagon screw head bolts, hex cap bolts, hex-cap screws, or machine bolts, are a very common choice when it comes to construction and repair. Hexagon screw head bolts come in a large variety of sizes and diameters. Hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole.