Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 939 DP1 12V found under Light Navigational Marine by Perko Inc. The National Stock Number assigned to this part is 6220011708784, and the Federal Supply Class is 6220 Electric Vehicular Lights And Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 939 DP1 12V.