Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U52-3PC found under Knob by Indak Mfg Corp. The National Stock Number assigned to this part is 5355013978580, 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 U52-3PC.