Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1734-31 found under Crane Overhead Traveling by The Entwistle Company. The National Stock Number assigned to this part is 3950012731349, and the Federal Supply Class is 3950 Winches Hoists Cranes And Derricks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1734-31.