Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1N791 found under Helmet Welders by Grainger W W Inc. The National Stock Number assigned to this part is 4240014775367, 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 1N791.