Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RAD 64005012 found under Lens Helmet Welders by Airgas Safety Inc. The National Stock Number assigned to this part is 4240002037764, 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 RAD 64005012.