D-Sub Jackscrew Socket for AMPLIMITE .050 Connectors
The TE Connectivity 749087-1 is a jackscrew socket from the AMPLIMITE.050 series, designed as a mating hardware accessory for D-Sub connectors in that family. It carries a dual thread configuration — a 2-56 socket on the female end and a 4-40 screw on the male end — giving it the reach to lock a plug and receptacle together through a panel. The length below head measures 0.405" (10.29 mm), which sets the panel thickness it can bridge and the thread engagement depth available. This is a standalone accessory; it is not included with a standard D-Sub connector and must be ordered separately when the application calls for screw-lock retention rather than slide-locks or a center-jackscrew.
Thread Compatibility and Panel Fit
The dual-thread arrangement is the key selection parameter. The 2-56 socket threads onto the mating D-Sub's male jackscrew post (common on AMPLIMITE.050 receptacles), while the 4-40 screw passes through the panel and threads into the connector's female standoff on the other side. The 0.405" below-head length means this socket works with panels up to about 0.090" thick before the screw bottoms out — thicker panels reduce the available thread engagement, so confirm the stack-up against the 4-40 thread depth in the mating hardware. The socket is intended for use with AMPLIMITE series connectors; it is not a universal D-Sub jackscrew and may not thread onto hardware from other families with different post diameters or thread pitches.