Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D38-902-6APC63 found under Indicator Sight Liquid by Electric Boat Corp. The National Stock Number assigned to this part is 6680001680498, 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 D38-902-6APC63.