Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ND6491 found under Elbow Pipe To Tube by Pearson Engineering Ltd. The National Stock Number assigned to this part is 4730998506093, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ND6491.