Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K843730-1SUB5 found under Knob by National Lock Co. The National Stock Number assigned to this part is 5355003108599, 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 K843730-1SUB5.