Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 338-426 found under Trunnion Hub Lower by Dayton Electric Mfg Co. The National Stock Number assigned to this part is 2520011012551, 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 338-426.