Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 18K10 found under Elbow Tube To Boss by Clark Equipment Co. The National Stock Number assigned to this part is 4730004516020, 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 18K10.