Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TLG5120-100-3-05 found under Gage Depth Countersink by United Drill Bushing Corporation. The National Stock Number assigned to this part is 5220001955674, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TLG5120-100-3-05.