Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 114H6821-1 found under Sleeve Cylinder by Essner Manufacturing Lp. The National Stock Number assigned to this part is 1615000693299, and the Federal Supply Class is 1615 Helicopter Rotor Blades Drive Mechanisms And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 114H6821-1.