Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 642-N95 found under Filter Respirator Air Filtering by Scott Technologies Inc. The National Stock Number assigned to this part is 4240012500780, 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 642-N95.