Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K3M213A found under Nut Plain Extended by Coltec Industries Inc. The National Stock Number assigned to this part is 5310012041814, 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 K3M213A.