Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 300-000-0640 found under by Lancer Systems Lp. The National Stock Number assigned to this part is 5360016578256, 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 300-000-0640.