4 circuits, 0.100" pitch, right-angle — what the BOM needs
The 68021-104HLF: The 0.230" (5.84mm) mating pin length gives enough reach to engage a standard socket's contact beam.
Plating grade matters: 30 µin vs 15 µin
The sibling 68021-204HLF is identical in every spec except the mating contact finish — it carries 15.0 µin gold instead of 30.0 µin. For a one-time prototype or a product that mates once and never disconnects, the 15 µin version saves cost. For any application that sees periodic reconnection — field servicing, modular boards, test fixtures — the 30 µin gold on this part buys roughly double the mating cycle life before the underlying nickel starts to oxidise.