Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5518 found under Protector Guy by Preformed Line Products Company. The National Stock Number assigned to this part is 4030010168394, and the Federal Supply Class is 4030 Fittings For Rope Cable And Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5518.