Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PE3986904 found under Diaphragm Pump by Peck Equipment Co. The National Stock Number assigned to this part is 4320003986904, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PE3986904.