B position: B ideas are present in equipment thread screws and they are for metallic, plastic and plywood, where a pilot hole has been drilled. They are often most effective for shallow holes they've got uniform threads, and so are solid with the next torque pressure. This implies you would like less socket screws to fasten two resources than when

In this category there are a few screws which have to have particular form of screwdriver for their set up. Binding screw heads are non-countersunk, which means that these heads don’t have an angle and they are Obviously seen about the project’s area, sitting previously mentioned it. Therefore, you won’t require to create a countersink divot