Thread gages are one of the most common quality testing tools used by fastener, automation, and testing equipment manufacturers. These instruments are relied on every day to test part uniformity and adherence to standards. Determining these physical dimensions can result in failing parts, modifying equipment, or parts replacement. To keep these instruments in top form, practice regular thread gage calibration and maintenance. See the tips below:
Corrosion is one of the main causes of thread gage wear. Thread gage corrosion can occur from exposure to oil or dirt. Gages are susceptible to surface and thread wear. Over time the markings can wear from the surface, making it extremely difficult to identify. Use another way to identify the gage if any wear is detected, such as applying a label or having the part number and dimensions stamped into the surface. Thread wear is harder to see. Thread deterioration can be identified during thread gage calibration testing.
To prevent corrosion, limit the potential for oil to come into contact with the thread gage. Many quality technicians try to wear gloves when handling thread gages. Simple cotton gloves will prevent transfer of oil from skin to gages. If wearing gloves isn’t an option, hand washing will decrease oil transfer. After handling the thread gage, ensure that it is cleaned properly. Use a soft, nonabrasive cloth to clean the thread gage. If a cleansing agent is necessary, use denatured alcohol. This process should remove any dirt or oil that is on the thread gage.
Thread gages will need to be checked on a regular basis. During thread gage calibration a technician checks for accuracy, noting any signs of wear or damage. If you have any questions about thread gage calibration and maintenance, contact ISO 17025 accredited laboratory e2b calibration.