Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E 876 81A C275 50LINKS 2STRANDS found under Chain Block by Barber Greene Co. The National Stock Number assigned to this part is 3020009747251, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E 876 81A C275 50LINKS 2STRANDS.