Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PJD-20R 4M 4M-C-H found under Switch Pressure by Gems Sensors Inc. The National Stock Number assigned to this part is 5930014336496, 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 PJD-20R 4M 4M-C-H.