4-40 x 1/4 6-Lobe Pan Taptite Alternative Thread Rolling Screw Fully Thrd Zinc & Wax U while the Type U drive

while the Type U drive design allows for easy installation with a square driver

The washer has a diameter of

The split lock washer is a type of washer that is used to prevent the screw from loosening

The 5/16 Countersunk Finishing Washer Nickel is a small

This 1/4-20 x 1 1/4" six-lobe flat thread cutting screw

4-40 x 1/4 6-Lobe Pan Taptite Alternative Thread Rolling Screw Fully Thrd Zinc & Wax U while the Type U driveThe 4 40 x 1 4 6 Lobe Pan Taptite Alternative Thread Rolling Screw Fully Threaded Zinc & Wax is a high performance screw designed for use in a wide range of applications. It features a 6 lobe pan head with a Phillips drive, and is fully threaded for maximum holding power. The screw is made of steel and zinc plated for corrosion resistance, and is coated with wax for smooth insertion. It is ideal for use in metal, plastic, and wood applications, and is