Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5439A found under Bushing Front Head by Worthington Compressors Inc. The National Stock Number assigned to this part is 5365009177063, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5439A.