Kreg's self-tapping screws were designed for its famous pocket-hole joinery, but that's not all they're good for. Kreg's self-tapping auger point eliminates time-consuming pre-drilling, and these screws are made from the highest quality steel, case-hardened and coated with a dri-lube finish. That means less driving torque for you. This coarse-thread screw has a larger thread diameter and provides greater holding power when driving a screw into soft material such as plywood, particle board, MDF, melamine and pine. The washer head offers a great surface area to seat the screw firmly and helps prevent overdriving. They're on the spendy side, but the quality is worth it