Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y00013884 found under Block Tackle by Soframe. The National Stock Number assigned to this part is 3940016254672, and the Federal Supply Class is 3940 Blocks Tackle Rigging And Slings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Y00013884.