Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GR1 18911 ITEM C found under Shim by Qinetiq Ltd. The National Stock Number assigned to this part is 5365999651825, 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 GR1 18911 ITEM C.