UL 94-V0. For suitable har flex PCB sockets see stock number ; 774-4142 774-4142 typical for 90 ° or ; 747-2556 747-2556 typical for straight orientations. For suitable har-flex IDC Socket connectors see stock number ; 774-4110 774-4110 typical. Harting har-flex SMT 90 deg Headers. This range of Harting har-flex right angled SMT male Headers are suitable for Board to Board or Wire to Board applications. These har flex right angled SMT male Headers have a performance level of > 500 mating cycles. The above board height of these har-flex right angled SMT male dual row Headers is 4.25 mm. The design of the har-flex right angled SMT male dual row Header includes Ø1.5 mm board fixing pegs for accurate positioning and retention on the PCB.