Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 105581 found under Inserter Electrical Contact by Pico Crimping Tools Co Inc. The National Stock Number assigned to this part is 5120001321979, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 105581.