Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 64001-00 found under Buckle Bar Respirator by Scott Technologies Inc. The National Stock Number assigned to this part is 4240012509016, 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 64001-00.