4-40 x 5/16 Socket Head Cap Screw Zinc DFAR EPW The black zinc finish provides

The black zinc finish provides corrosion resistance

The screw is 7/16 inches long

and feature a Phillips drive head for easy installation

The serrated washer helps to prevent the screw from loosening due to vibration

The 1/4-14 x 1/2 Slotted Indented Hex Washer Self Tapping Screw Type AB Fully Threaded Black Oxide is a versatile and durable fastener designed for a wide range of applications

4-40 x 5/16 Socket Head Cap Screw Zinc DFAR EPW The black zinc finish provides4 40 x 5 16 Socket Head Cap Screw Zinc DFAR is a type of screw that is used to fasten two pieces of metal together. It has a hexagonal head with a socket in the center, and a threaded shank. The screw is made of steel and has a zinc coating to protect it from corrosion. The DFAR designation means that the screw meets the requirements of the Defense Federal Acquisition Regulation Supplement. The screw is 4 40 x 5 16, which means that it has a diameter