The TE Connectivity 749087-2 is a jackscrew socket from the AMPLIMITE.050 series, designed as a D-Sub accessory for securing the connector pair. It carries a 2-56 Socket thread on one end and a 4-40 Screw thread on the other, with a length below head of 0.223" (5.66 mm). This hardware piece is used with AMPLIMITE series D-Sub connectors to provide mechanical retention and prevent the mated pair from vibrating loose in panel-mount or cable-to-panel applications.
Thread Compatibility and Panel Fit
The dual-thread design — 2-56 Socket on the jackscrew body, 4-40 Screw on the mating end — matches the standard D-Sub hardware pattern. The 0.223" (5.66 mm) length below head accommodates typical D-Sub panel thicknesses up to about 1/8" (3.2 mm) before the threads bottom out. For thicker panels, verify the thread engagement depth against the panel stack-up.