Sems screw: advanced application of sperate screws and washers

Sems screw: advanced application of sperate screws and washers

Sems screws are also called pre-assembled screws. This is a kind of screws with permanently attached washers or a set of washers. Because SEMs fasteners have washers under the head, they can be installed quickly. They are also durable and easy to adapt to a variety of applications. When using them, there is no need to worry about the loss of washers; This in turn helps to extend product life and ensure reliable performance.

Different types of screws and washers compose different types of sems screw.
screws can be machine screw, trilobe screw, tappping screws and washers can be flat washers, spring washers or external/internal tooth washers.

There may be single washer assembled with the screw or two even three washers assembled together onto a single screw, the combination is depend on application of the work piece.

Standard sems screws are with machine screws, other types of screw used in sems design require custom prodution which the cost may involve customization of the track

Compared with seperate screw and washer combination, sems screw has the following characteristics:

1. Reduce the possibility of human error, wrong combinations or forget to match washers;

2. More safe and convenient to assemble very small size products;

3. Maintenance and repair can be completed in places that are difficult to touch or restricted;

4. Reduce inventory category and quantity.

We provides below standard and customized sems screw with regular production :