Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S100.125-BLACK found under Cap Knob by Selco Products Inc. The National Stock Number assigned to this part is 5355012883111, and the Federal Supply Class is 5355 Knobs And Pointers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S100.125-BLACK.