Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3172276 found under Ring Externally Threaded by Arizona Gear And Mfg Co. The National Stock Number assigned to this part is 5365012566907, 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 3172276.