Overview

• Combination slotted/Phillips drive types are used with either a slotted or Phillips driver
• They combine the linear slot of slotted drive types with the cross-shaped slot of Phillips drive types
• Machine screws without washers can be used with both flat and lock washers
• Round head types are dome shaped with flat bearing surfaces
• They have higher head heights than pan head fasteners
• 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.