Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74A411643-1001 found under Spring Assortment by Nassau Tool Works Inc. The National Stock Number assigned to this part is 5360015960537, 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 74A411643-1001.