4-40 x 9/16 Phillips Pan Square Cone Sems Fully Threaded Zinc D439B They have a sharp point

They have a sharp point that drills its own pilot hole

These 10-16 x 1/2" Unslotted Indent Hex Washer Head Self Drilling Screws are designed for fastening into metal

It has a fully threaded body and a combination Phillips/slotted drive

The 2-56 x 1/4 Phillips Flat Machine Screw Fully Threaded Black Zinc is a small

They have a Phillips drive and a hex washer head with a 5/8-inch diameter

4-40 x 9/16 Phillips Pan Square Cone Sems Fully Threaded Zinc D439B They have a sharp pointThese 4 40 x 9 16 Phillips pan square cone sems fully threaded zinc screws are designed for a variety of applications. They are made of zinc plated steel for corrosion resistance and have a Phillips pan head for easy driving. The square cone sems helps to prevent the screw from loosening and the fully threaded design provides a secure hold. These screws are commonly used in metal, wood, and plastic applications.