Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SL-603 found under Entrance Elbow Elec by Thomas And Betts Corp. The National Stock Number assigned to this part is 5975011251214, 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 SL-603.