Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P1-020-3 found under Indicator Subassembly Pressure by Red Valve Companyinc. The National Stock Number assigned to this part is 6685015042427, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P1-020-3.