Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J4-001 found under Ring Turbine Bearin by Precision Rings Incorporated. The National Stock Number assigned to this part is 5365009592153, 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 J4-001.