10-16 x 2 1/2 6-Lobe Flat Self Drilling Screw Fully Threaded Zinc & Bake NP They are non serrated

They are non serrated

8 x 16 DIN 965 Metric Phillips Flat Machine Screw Full Thread Zinc is a high-quality screw designed for use in a variety of applications

This 2 1/4-4

while the fully threaded shank provides secure fastening

10-16 x 2 1/2 6-Lobe Flat Self Drilling Screw Fully Threaded Zinc & Bake NP They are non serratedThese 10 16 x 2 1 2 inch 6 lobe flat self drilling screws are fully threaded and made of zinc and baked steel. They have a flat head and a 6 lobe drive. These screws are designed for use in metal applications and are ideal for attaching metal to metal. They are self drilling, which means they can drill their own holes, eliminating the need for pre drilling. The zinc and baked steel construction provides corrosion resistance and durability.