Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W231 found under Spring Helical Compression by Columbus Mckinnon Corporation. The National Stock Number assigned to this part is 5360002328941, 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 W231.