Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4130 found under Spring Helical Comp by Smith And Wesson Corp. The National Stock Number assigned to this part is 5360011377643, 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 4130.