Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DDAV2CN7D2TSR found under Drain Floor by Bestweld Inc. The National Stock Number assigned to this part is 4510015197830, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DDAV2CN7D2TSR.