Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 741 TR4 10T found under Switch Pressure by Sigma Netics Inc. The National Stock Number assigned to this part is 5930015816133, 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 741 TR4 10T.