Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 14-43500 ITEM 12 found under Nutplainhexagon by Young Engineering And Manufacturing. The National Stock Number assigned to this part is 5310016735835, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 14-43500 ITEM 12.