AKM Thread Repair Kit 338Pc — Helicoil HSS Drill & Tap Set, SAE & Metric for Stripped Threads

AKM 338Pc Thread Repair Kit is a complete helicoil-style repair set that restores stripped internal threads in both SAE and metric sizes for automotive and general mechanical work.

This professional-grade kit gathers everything needed to repair or reinforce damaged internal screw threads in engines, machinery, and soft-metal components. The set combines hardened HSS drill bits, precision taps, wire thread inserts, installation tools and a thread gauge so you can match sizes quickly and rebuild stronger threads that resist wear.

What sizes and standards does this kit cover?

The kit supports common inch and metric thread sizes, including 1/4", 5/16", 3/8", 7/16", 1/2" and M5, M6, M8, M10, M12. All components are produced to fit professional workshop tolerances so inserts lock into place and mating bolts thread smoothly.

• Includes both SAE and metric wire inserts and corresponding taps/drills.
• Taps and drills are high-speed steel (HSS) for durability and consistent cutting.
• Complete thread gauge to verify pitch before repair.

How does the repair process work with this kit?

Repairing a stripped hole typically involves drilling out the damaged thread to the correct size, tapping a new internal thread, and installing a wire insert that provides new, precise threads for the bolt. The kit supplies the specialized installation and break-off tools to seat inserts flush for a secure fit.

• Follow the included instructions to drill to the recommended diameter.
• Use the matching tap to cut a new internal thread for the insert.
• Install the wire insert with the driver and snap off the tang when seated.

What makes this kit practical for home garages and shops?

The 338-piece layout gives a broad selection of inserts and tools so you can tackle multiple thread sizes without buying separate kits. A molded carrying case keeps each component organized, reducing time lost hunting for the right drill, tap, or insert.

• All parts stored in a compact, labeled carrying case for portable workshop use.
• Individual boxes for inserts and foam-cut slots for drills and tools prevent damage in transit.
• Detailed instructions included to shorten the learning curve for first-time users.

Will repaired threads be stronger than the original?

Wire thread inserts create a hardened steel thread inside softer materials, which often exceeds the strength of the original tapped hole—especially in aluminum or cast iron. While performance depends on correct installation and insert selection, these inserts are widely used in automotive and machinery repairs to improve longevity.

• Hardened inserts distribute load over multiple turns for better wear resistance.
• Properly sized inserts restore thread engagement and torque capacity.
• Use the included thread gauge to confirm the best insert match before installing.

Who is this for? The AKM 338Pc Thread Repair Kit is aimed at DIY mechanics, home garage owners, professional technicians and maintenance crews who need a single, versatile solution for stripped or damaged internal threads. If you work on engines, motorcycles, lawn equipment or general machinery and want a durable repair option without outsourcing, this kit supplies the drills, taps, inserts and tools to get the job done efficiently and repeatedly.