Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PP40013 found under Knob by Buckeye Stamping Company The. The National Stock Number assigned to this part is 5355002690769, 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 PP40013.