Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 100409-101 found under Switchpressure by Aerospace Filtration Systems Inc. The National Stock Number assigned to this part is 5930016797842, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 100409-101.