The Keystone 7235 D-Sub, D-Shaped Connectors - Accessories - Jackscrews are designed to provide a secure connection between two components. These jackscrews feature a #4-40 thread size and a 0.285 inch length. They are made from durable materials and are designed to withstand the rigors of everyday use. The jackscrews are easy to install and provide a reliable connection. They are ideal for use in a variety of applications, including computer and electronic equipment, automotive, and industrial applications. The Keystone 7235 D-Sub, D-Shaped Connectors - Accessories - Jackscrews are a reliable and cost-effective solution for your connection needs.