Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99-6039255 found under Spring Assy Rack by Nato Stock Number Assigned By An. The National Stock Number assigned to this part is 5360004717532, 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 99-6039255.