Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GRFS5H9 found under Lens Helmet Welders by Sellstrom Manufacturing Co. The National Stock Number assigned to this part is 4240013568025, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GRFS5H9.