709901201 domed nut by C&K Dims: 3mm high, 8.94mm AF, 9.45 Dia. 1/4-40 UNS thread (important bit ! ) Finish: nickel plated. For: 7000, 9000, E & T Series toggle switches / 8020, 8060, 8500, E010 & TP Series Pushbutton switches. Download C&K 709901201 nut datasheet: These provides a proffessional finish to any front panel. RoHS: tbc (price is for one single nut)