Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X205 found under Nut Self Locking Slotted Hexagon by Coffin Turbo Pump Inc. The National Stock Number assigned to this part is 5310014005833, 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 X205.