Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1TW1-3 found under Switch Toggle by Honeywell Control Systems Ltd. The National Stock Number assigned to this part is 5930001166549, 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 1TW1-3.