Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5N4512 ITEM 2 found under Tube Assembly Metal by Caterpillar Inc. The National Stock Number assigned to this part is 4710012982370, and the Federal Supply Class is 4710 Pipe Tube And Rigid Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5N4512 ITEM 2.