Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SJ-30-A2 found under Proximity Switch by E And M Equipment Co. 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.