Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PDG3690 found under Valve Heater Control Vehicular by Product Development Group Inc. The National Stock Number assigned to this part is 2540000066172, and the Federal Supply Class is 2540 Vehicular Furniture And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PDG3690.