Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1605 0120 R19 found under Switch Toggle by Marquardt Switches Inc. The National Stock Number assigned to this part is 5930013016937, 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 1605 0120 R19.