Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SJ-30-A2 found under Proximity Switch by Royal Electric Supply Company. The National Stock Number assigned to this part is 5930011202678, 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 SJ-30-A2.