Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 218201003-56IN found under Conduit by Opt Industries Inc. The National Stock Number assigned to this part is 5975003596105, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 218201003-56IN.