Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 558928 found under Protector Guy by Wibe Telescopic Masts Ab. The National Stock Number assigned to this part is 4030013333673, 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 558928.