Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TL4023 found under Gage Fixture by Williams International Co Llc. The National Stock Number assigned to this part is 5210010357013, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TL4023.