Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E9AR100-011 found under Plug Machine Thread by Optex Systems Inc. The National Stock Number assigned to this part is 5365014339368, 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 E9AR100-011.