ITG 0.6875-24 UNEF3B GO PD 0.6604 NO GO PD 0.6643 Thread Plug Gauge is a precision tool for inspecting internal UNEF3B threads with a 0.6875-24 size. The GO end presents a pitch diameter of 0.6604, while the NO GO end is 0.6643, providing a clear go/no-go check for thread acceptance. Use this gauge in manufacturing and quality-control processes to verify that threaded holes meet the specified pitch-diameter limits for this thread series.
