different types of screws and their uses
There are many types of screw fasteners, and depending on the product, the types of screws are different. So what are the different types of screws and their uses ? Precision small screws, generally used in precision instruments, electronic products, watches, mobile phones, etc. The precision small screws can be divided into many types depending on the material, size, groove shape, head shape, and tooth type. The precision small screw has only a rough name. The shoulder screw mainly refers to a step or more than one step under the head, which is called a step screw. This type of screw is generally non-standard, depending on the user’s product, the step size, thread diameter, length, and head size of the screw are also different. Generally used in industries such as machinery and electronics. Long screws or extension screws. This type of screw is mainly because the length is much longer than the conventional screw. Such long screws are generally used on lighting...