1/4-20 x 6 Six Lobe Flat Floor Board Screw Type F Black Phosphate NCAG188 This 1/4-20 x 1 1/2

This 1/4-20 x 1 1/2 Carriage Bolt is made of steel and has a black oxide and oil finish

With its 10-24 thread size and 2 1/4-inch length

marine installations

The screw is made of zinc-plated steel for corrosion resistance

It is a Type F screw

1/4-20 x 6 Six Lobe Flat Floor Board Screw Type F Black Phosphate NCAG188 This 1/4-20 x 1 1/21 4 20 x 6 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 6 inches long. The six lobe drive head provides a secure grip for driving, and the flat floor board head sits flush with the surface of the floor. The black phosphate finish provides corrosion resistance.