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- Pro-Thread Kits offer a cost effective method of repairing and strengthening threads in various materials such as cast iron, steel, aluminum, and other metals and plastics
- Effective for automotive repair, spark plug ports, outdoor power equipment, motorcycle repairs, farm equipment, and more!
- Easy to install, just DRILL, TAP, INSERT, SNAP!
- Pro-Thread inserts provide a permanent wear resistant internal thread
- Stainless steel inserts resist the effects of temperature and corrosion
- Wire inserts help to compensate for the thread and pitch angle errors
- Repaired threads are generally stronger than the original parent material thread
• Thread Size: National Coarse UNC 5/16-18
• Includes tap, installation tool and set of inserts
• 1.5D, 0.4688″ OAL inserts
• Tapping drill required: 8.3mm or 21/64″
• CTA Insert Replacements: Part #23059
