Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UCL2-8638 found under Release Sleeve And by Gkn Rockford Inc. The National Stock Number assigned to this part is 4620006067251, and the Federal Supply Class is 4620 Water Distillation Equipment Marine And Industrial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like UCL2-8638.