Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LW1931-1 REV F found under Transformerpower by Power Paragon Inc. The National Stock Number assigned to this part is 5950016904790, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like LW1931-1 REV F.