Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4FT-40LB found under by Dings Co. The National Stock Number assigned to this part is 3830014089016, and the Federal Supply Class is 3830 Truck And Tractor Attachments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4FT-40LB.