Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X5008 12 156 25 found under Spacer Ring by Wellman Group. The National Stock Number assigned to this part is 5365005858176, 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 X5008 12 156 25.