Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RS60 SS 1 found under Link Leaf Chain by Us Tsubaki Inc. The National Stock Number assigned to this part is 3020016159455, 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 RS60 SS 1.