Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ANSI NO. 50 CHAIN 102 PITCH IN found under Chain Roller by Us Tsubaki Inc. The National Stock Number assigned to this part is 3020014510469, 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 ANSI NO. 50 CHAIN 102 PITCH IN.