Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8F3-5 found under Vacuum Pump Unit Rotary by Ellis And Watts International Llc. The National Stock Number assigned to this part is 4310001404361, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8F3-5.