6-20 x 1 1/4 6-Lobe Flat Self Drilling Screw Fully Threaded Zinc & Bake 1-1/2-12 which means that it has

which means that it has a diameter of 10 threads per inch and a length of 3 inches

This 2-56 x 1/8 Phillips flat 100º machine screw is fully threaded and made of zinc

They are designed for use in heavy-duty construction applications

They feature a full thread design for maximum holding power and a hex washer head for easy installation with a wrench

6-20 x 1 1/4 6-Lobe Flat Self Drilling Screw Fully Threaded Zinc & Bake 1-1/2-12 which means that it hasThese 6 20 x 1 1 4 6 Lobe Flat Self Drilling Screws are fully threaded and made of zinc and baked steel. They are designed for use in a variety of applications, including metal to metal, metal to wood, and wood to wood. The self drilling point eliminates the need for pre drilling, saving time and effort. The 6 lobe drive provides a secure grip, reducing the risk of cam out. These screws are zinc plated for corrosion resistance.