Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R2HD1-5X3 found under Cylinder Assembly Actuating Line by Hydro Line Mfg Co. The National Stock Number assigned to this part is 3040010065623, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R2HD1-5X3.