Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CP3590M found under Spacer Special by Pentair Pump Group Inc. The National Stock Number assigned to this part is 5365010260582, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CP3590M.