1/4-20 x 5 Six Lobe Flat Floor Board Screw Type F Black Phosphate BPU188 This 1/2-13 x 5/8 Hex

This 1/2-13 x 5/8 Hex Cap Screw Grade 5 Zinc is a durable and reliable fastener designed for a wide range of applications

The nut is also thin

and the 4 1/4-inch length ensures a strong hold

which means that it has a recessed cross-shaped drive that requires a Phillips screwdriver to install

The 1/4-20 x 1/2 Six Lobe Flat Floor Board Screw Type F Black Phosphate is a small

1/4-20 x 5 Six Lobe Flat Floor Board Screw Type F Black Phosphate BPU188 This 1/2-13 x 5/8 Hex1 4 20 x 5 Six Lobe Flat Floor Board Screw Type F Black Phosphate This screw is designed for use in floor board applications. It has a 1 4 20 thread size and is 5 inches long. The six lobe drive head provides a secure grip for driving, and the flat head sits flush with the surface of the material. The black phosphate finish provides corrosion resistance and a professional appearance.