HP 5090-9975 is a HAN D connector insert for assembling a compatible connector with 18 AWG wire. Its male configuration identifies the contact style, while the wire gauge specification helps distinguish it from inserts made for other wire sizes.
The listing identifies this part as 18 AWG and male, with 10 inserts in the package. It is a compact connector component intended for use as part of a suitable HAN D connection. The product reference is 5090-9975.