Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RD4-5L1R3T found under Switch Sensitive by Robertshaw Controls Company. The National Stock Number assigned to this part is 5930008376765, 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 RD4-5L1R3T.