These forgefix socket screws have a raised head and are designed for attaching electrical wall sockets and switches the screws have a slotted head and are nickel plated for increased durability applicationused specifically for attaching electrical wall socket and switches to back plates the nickel plating process coats mild steel or stainless steel to considerably prolong the parts life nickel plating is probably the most corrosion resistant finish available and is often used on socket screws f