Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GS23D18 found under Stud Self Locking by Mount Lok Products Inc. The National Stock Number assigned to this part is 5307011630653, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GS23D18.