34089 - Pro-Thread Thread Repair Kit - 1/2 - 20 UNF

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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 Fine UNF 1/2-20

• Includes tap, installation tool and set of inserts

• 1.5D, 0.7500" OAL inserts

• Tapping drill required: 13mm or 33/64"

• CTA Insert Replacements: Part #24089