API Regular Rotary Shoulder Connection Thread Plug and Ring Gages

Features

• Clean the threads and gages thoroughly and apply a thin film of thread compound or lubricant.
• Insert the thread plug gage into the box and rotate it by hand until it makes contact with the thread flank. The gage should enter the box smoothly and easily, without binding or jamming. The gage should not enter more than one full turn beyond the hand-tight position.
• Remove the thread plug gage and inspect it for any damage or wear. If the gage is damaged or worn, it should be replaced or recalibrated.
• Place the thread ring gage over the pin and rotate it by hand until it makes contact with the thread flank. The gage should fit over the pin smoothly and easily, without binding or jamming. The gage should not fit more than one full turn beyond the hand-tight position.
• Remove the thread ring gage and inspect it for any damage or wear. If the gage is damaged or worn, it should be replaced or recalibrated.
• If the thread plug and ring gages fit within the specified limits, the thread connection is acceptable. If the gages do not fit within the specified limits, the thread connection is unacceptable and should be rejected or repaired.