Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AR7725HD REV. A found under Switch Pressure by Arlet Mfg Inc. The National Stock Number assigned to this part is 5930005034884, 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 AR7725HD REV. A.