Thread Gauge: Unified Acceptance criteria for components The GO gauge when screwed by hand without using excessive force, should enter and pass the whole length of the workpiece thread. The NOT GO gauge when screwed by hand without being forced, should not enter the component by more than three complete turns. Check the PDF
The Baker Unified Thread Gauge is a precision inspection tool designed for verifying the accuracy of Unified thread profiles. Manufactured in accordance with ANSI/ASME B1.2 standards, these gauges are essential for quality control in industrial manufacturing environments to ensure workpiece threads meet specified tolerance requirements.
The Unified thread gauge system accommodates various tolerance classes for both internal (Nut) and external (Bolt) threads: