Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R190 518 found under Knob by Horus Vision Llc. The National Stock Number assigned to this part is 5355015911750, 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 R190 518.