Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CS120-48 AND PATTERN 515 found under Door Wood by National Bureau Of Standards. The National Stock Number assigned to this part is 5520002218059, and the Federal Supply Class is 5520 Millwork. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CS120-48 AND PATTERN 515.