Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 506-6303 found under Switch Code Indicating Wheel by Pertec Computer Corp. The National Stock Number assigned to this part is 5930012549696, 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 506-6303.