Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 87749-3502 found under Universal Joint Vehicular by Electric Boat Corporation. The National Stock Number assigned to this part is 2520011437306, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 87749-3502.