Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4912ITEM3B found under Spring Helical Exte by Eaton Corporation. The National Stock Number assigned to this part is 5360003163132, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4912ITEM3B.