Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 413-02-6X4L1800 found under Hose by Mks Instruments Inc. The National Stock Number assigned to this part is 4720011137924, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 413-02-6X4L1800.