Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WD4100A02 found under Plug Machine Thread by Dietz Electric Co Inc. The National Stock Number assigned to this part is 5365014241872, 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 WD4100A02.