Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 020194 found under Swirl Ring Welding by Hypertherm Inc. The National Stock Number assigned to this part is 3439014700158, and the Federal Supply Class is 3439 Miscellaneous Welding Soldering And Brazing Supplies And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 020194.