The 748627-2 is a jackscrew designed for use with D Subminiature AMPLIMITE connectors, specifically compatible with HD-20 contacts. It features a large head, non-magnetic construction with a zinc phosphate screw finish for corrosion resistance. The jackscrew has a thread size of 4-40 and a screw length of 37.39 mm, providing secure fastening for connector assemblies. This hardware component is EU RoHS/ELV compliant and is commonly used in coaxial and signal connector applications where reliable mechanical fastening and shielding are required.