specialty screws and fasteners

Specialty screws and fasteners are rarely seen in the market or basically do not have. It needs to be customized to have it. And these screws appear because of people’s needs. Next, Shi Shi Tong screws factory will introduce some special screws and fasteners.

★This flat countersunk head hexagon socket screw is not a very special screw. But most people rarely see this type of head. There are two main methods for producing this type of head: one is to use a mold for production. After a flat countersunk head is first produced, and then turning.

★This screw is a non standard special screw. The head is a hexagonal head that has been turned. The threaded portion is not common at the bottom of the rod, but is made in the middle of the rod. And the thread diameter is much larger than the diameter of the rod. In the middle of the head has a hexagonal hole, the hole is through. Substantially the whole screw turning done.

★This shoulder screw has a nylon patch on the threaded part. The screw can be better tightened and not easy to fall off. It is said that this screw is special because the washer of the head is larger than the conventional one, and a part of the tail does not have cavities.

★This is also a shoulder screw. Phillips recessed is usually common in the head inside, and phillips size of this step is to screw with the diameter of the head is the same.

★This is also a specialty screws and fasteners. Common shoulder screws are only one or two shoulder. However, this screw has a shoulder between the first shoulder and the third shoulder, and the diameter of this shoulder is smaller than the diameter of the third shoulder. Also processed at the end of the thread to make it better fastened。

★Specialty screws and fasteners stainless steel electrophoresis screw. There is a shoulder on the top and bottom of the knurl, and the tail of the screw is in the shape of a circular arc.

All right. The special screws and fasteners introduced today are here. If you want to know more or would like to order special screws, welcome to contact us for free：annie.li@szsst88.com