Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MPS14B4Q52 found under Switch Rotary by Eaton Corporation. The National Stock Number assigned to this part is 5930000270262, 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 MPS14B4Q52.