Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 56P040-1400 found under Spring Flat by Matrix Engineering Ltd. The National Stock Number assigned to this part is 5360013594755, 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 56P040-1400.