Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F6.4.165-2 found under Cylinder Assembly A by Columbus Mc Kinnon Corp. The National Stock Number assigned to this part is 3040123053833, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F6.4.165-2.