Overview

• Pan head types have cylindrical heads with rounded edges and flat bearing surfaces
• Their low head height and large diameter provide increased driving power
• Phillips drive types have a cross-shaped slot and are used with Phillips drivers
• Steel is strong and durable but less corrosion resistant than stainless steel
• To improve its resistance to corrosion, it may receive additional finishes and coatings
• Type B screws have large, flat points and a fine thread pitch
• They are used to cut threads in heavier sheet metal
• They can also be used in blind holes.