PSEN screw M5x10 10pcs 540311 One-way screws, one-way slot, M5x10, material stainless steel, PU = 10 pieces, suitable for actuator: PSEN cs1.x, PSEN cs2.x. Perfectly matched to magnetic sensors PSENmag: multiple interfaces PDP67, screws, spacers, mounting brackets, reverse spacers and much more.