Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CRC2390MA101-31 found under Valve Regulating Fuel Oil by Harvey Sid Inc. The National Stock Number assigned to this part is 4530009836375, 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 CRC2390MA101-31.