Industrial.5660 Go/No-Go Thread Plug Gauge is a two-ended inspection tool used to verify internal threads on 5/8-11 UNC-2B holes. The Go end, at 0.5660 inches in diameter, should thread into holes that meet tolerance, while the No-Go end, at 0.5732 inches, should not pass into the same threads, preventing out-of-tolerance conditions. Widely used in quality control and manufacturing to confirm thread size and fit before assembly or further machining.
