Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4045 found under Shot Classifier by Metal Improvement Co. The National Stock Number assigned to this part is 3680000383615, and the Federal Supply Class is 3680 Foundry Machinery Related Equipment And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4045.