Threaded Ring Gages are precision tools used to inspect the external threads on cylindrical parts such as bolts, screws, or studs. They are designed to ensure that the threads on the workpiece meet the specified dimensional and geometric requirements.


  1. **Inspection of Threaded Parts**: Threaded Ring Gages are primarily used for the inspection of threaded parts to determine if the threads meet the specified requirements in terms of size, pitch diameter, pitch, and thread form.
  2. **Verification of Thread Quality**: They help in verifying the quality of the threads, ensuring that they are properly formed and within acceptable tolerance limits. This is crucial for parts that require reliable and secure fastening, as any deviations from the specified thread parameters can lead to assembly issues or failures.
  3. **Calibration of Threaded Tools**: Threaded Ring Gages can also be used for the calibration of other threaded tools such as thread plug gages or thread setting plugs. By using a calibrated ring gage, manufacturers can ensure the accuracy and reliability of their inspection equipment.
  4. **Standard Compliance**: ASME B1.1 provides the standard specifications for unified inch screw threads. Threaded Ring Gages are designed and manufactured according to these specifications to ensure conformity with industry standards and compatibility with threaded parts produced to ASME standards.
  5. **Variety of Applications**: These gages are used across various industries where threaded fasteners are employed, including automotive, aerospace, construction, and manufacturing. They are essential tools for quality control and assurance in the production of threaded components.
  6. **Maintenance of Quality Control**: Regular use of Threaded Ring Gages helps manufacturers maintain quality control throughout the production process. By periodically inspecting threaded parts using these gages, manufacturers can identify any deviations from the specified thread parameters and take corrective actions to ensure product quality and reliability.

In summary, Threaded Ring Gages play a crucial role in ensuring the quality and integrity of threaded parts by providing a reliable means of inspection and verification according to ASME B1.1 and ASME B1.2 standards. Their use is essential for maintaining quality control and meeting the stringent requirements of various industries.

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