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Thread Damage Failures

Thread damage can occur because of cross-threading, over-torquing, and under-torquing. Cross-threading happens when the threads of two screwed together pieces are not aligned correctly.  Cross-threading can result from insufficient or incorrect installation torque and can cause serious damage.  Thread damage can also occur because of over-torque, which stretches the thread spacing.  Thread damage can also occur from under-torque, which can result in loosening of the joint from vibration and thread damage.  Using a torque wrench with careful installation can prevent thread damage.

Recent thread damage investigations and testing by J.E.I. Metallurgical are listed below.

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J.E.I. Metallurgical, Inc.

5514 Harbor Town
Dallas, Texas 75287

Phone: (972) 934-0493
Fax: (469) 737-3938

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