Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A2018 found under Spring Lens Retaine by Lcdoane Companythe. The National Stock Number assigned to this part is 5360008726844, 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 A2018.