Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LL1 4X3 4 found under Pin Spring by Saginaw Products Corporation. The National Stock Number assigned to this part is 5315006822057, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like LL1 4X3 4.