Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RC 863 found under Spacer Ring by United Equipment Accessories Inc. The National Stock Number assigned to this part is 5365012855962, 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 RC 863.