4-40 x 5/16 Phillips Flat 100º Machine Screw Fully Threaded Zinc Black 2 1/2 it features a heavy pattern

it features a heavy pattern design that provides increased strength and resistance to loosening

This 1/4" SAE flat washer is made from 18-8 stainless steel

disc-shaped washer with a hole in the center

The 5/16-18 thread size and 3/4-inch length make it suitable for a variety of projects

and a plain finish

4-40 x 5/16 Phillips Flat 100º Machine Screw Fully Threaded Zinc Black 2 1/2 it features a heavy patternThese 4 40 x 5 16 Phillips Flat 100 Machine Screws are fully threaded and coated in a durable zinc black finish. They are designed for use in a variety of applications, including metal, plastic, and wood. The Phillips flat head provides a flush, low profile finish, while the 100 point allows for easy starting and driving. These screws are strong and corrosion resistant, making them ideal for both indoor and outdoor use.