Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1-593 found under Conduit Nonmetallic Flexible by Barber Greene Co. The National Stock Number assigned to this part is 5975002847339, 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 R1-593.