Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2050939 PIECE 43 found under Spacer by P J Valves Inc. The National Stock Number assigned to this part is 5365011378028, 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 2050939 PIECE 43.