749087-1

D-Sub, D-Shaped Connectors - Accessories - Jackscrews

Jackscrews, also known as thumbscrews, are specialized screws most commonly associated with D-shapes connectors, especially the D-Sub type popular in computer, automotive, and consumer electronics. Depending on the specific design, a 749087-1 jackscrew is used for securing the connectors or for connecting the conductors of the harness to the device. It is essential to ensure that the jackscrews are properly installed to maximize performance.

Application Fields

Jackscrews play an important role in many industries that use D-sub connectors. This type of connector is ideal for applications where environmental sealing is necessary, such as automotive wiring harnesses, external power supplies, telephone systems, and several manufacturing industries, including medical products. Jackscrews are typically used to attach D-sub connectors to system housings or boxes. The screws can be used both with metal housings and with plastic housings.

Working Principle

Jackscrews are generally used to fasten electromagnetic connectors or to act as a conduit between the two. When a device that uses a 749087-1 jackscrew is powered on, the exposed conductor is connected with the equipment’s ground, creating a magnetic field. The strength of this magnetic field is determined by the number of turns the conductor has made. This connection is maintained as long as power is applied, and when power is removed, the magnetic field is dissipated.

When purchasing a jackscrew, it is important to determine the type of housing or application the screw will be used for. Some screws are threaded and some are slotted. The threads come in different sizes and have certain tolerances depending on the type of device and application. Furthermore, some jackscrews require special tools for installation and removal, which can be purchased separately. It is also important to inspect the jackscrew to ensure it’s in perfect working condition.

Conclusion

Jackscrews are an essential component in any device that uses a D-sub type connector. These specialized screws come in different types and sizes, and must be chosen carefully to ensure the device operates without any issues. It is also important to take into account the tools necessary for installation and removal.