What are the shoulder screws?

There are many different types of screws and fasteners, each of which serves a specific purpose. The shoulder screws have threading, which does not continue from the tip to head, so that the base of the head is a smooth part of the track. These screws are used for several different applications, including those that include rotation or require a screw type. They are also often called "shoulder screws". On many screws it goes to each other from the tip to head. On the shoulder screw, however, the thread stops a certain distance from the head and leaves a smooth round or square stem between the head and the head. This area is usually slightly larger than the threaded part of the screw.

Due to their design, these bolts are used for many specialized purposes. For example, they are often used in automotive or mechanical applications because the undivided arm creates a good fastener for pulleys, bonds and other moving parts. It allows rotation or other movement, such as connecting pins.

shoulder screws can also be made of square arms, for example in a wooden head screw. Square arms are useful because they resist rotation, allowing them to act as a strong permanent fastener. For example, the wooden bolt of the round head is used in the wood, because the square part of the stem resists movement, allowing it to lock it in a place in the wood. This screw has a smooth round head without slots for a screwdriver or key; The screw is attached by a nut that is screwed to the threaded end.

different types of metals, including steel alloys and stainless steel, can also be used to make shoulder screws. You can also have different types of heads such as slots, phillips, square or hexagon. The length and diameter of the arm is often as important as the size of the threaded part, as the smooth part of the shaft can serve the most important function of the screw.