Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R660404004-0136CU found under Hose Assembly Nonme by Smiths Tubular Systems Laconia Inc. The National Stock Number assigned to this part is 4720000035388, 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 R660404004-0136CU.