Kreg Zinc Screws are a good choice for a wide variety of indoor projects with limited exposure to the elements. Zinc screws provide adequate rust protection, and serve as an affordable alternative to our more protective Blue-Kote™ and stainless screw varieties.
Kreg's most common screw head type is the Maxi-Loc which is a washer head screw
The large bearing surface of the washer head is designed to seat securely in the bottom of the pocket, providing a tremendous amount of consistent clamping force on the joint line
Coarse thread with a larger diameter that provides greater holding power when driving a screw into soft material such as plywood, particle board, MDF, melamine and pine