Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20SL4-20SF90-20SF-0-48IN found under Hose Assembly Nonme by Anchor Swan Corp. The National Stock Number assigned to this part is 4720011023321, 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 20SL4-20SF90-20SF-0-48IN.