Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 423R2571-1 found under Spacer Ring by Creative Precision Inc. The National Stock Number assigned to this part is 5365014254801, 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 423R2571-1.