Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AMS5643 SOLUTION HEAT TREATED found under Bar Metal by Sae International. The National Stock Number assigned to this part is 9510005005433, and the Federal Supply Class is 9510 Bars And Rods. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AMS5643 SOLUTION HEAT TREATED.