Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GTK100-223 found under Inserter Collar by Greer Industries Inc. The National Stock Number assigned to this part is 5120011473544, 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 GTK100-223.