Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CMC6 4N S316 found under Tube And Fittings Metallic by Hy Lok Usa Inc. The National Stock Number assigned to this part is 4710016582317, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CMC6 4N S316.