Orion Motor Tech Thread Repair Kit — 344‑pc SAE & Metric Thread Restorer with HSS Drills and Inserts

The Orion Motor Tech 344-piece OMT Thread Repair Kit is a complete SAE and metric thread-restoring solution with drill bits, taps, wire inserts, installation tools and tang break-off tools packaged for easy transport.

If you work on engines, machinery, appliances or DIY projects, damaged or stripped threads are a common stop in the repair process. This OMT kit supplies the matching drill, tap and helicoil-style wire inserts for both popular SAE (1/4" to 1/2") and metric (M5 to M12) sizes, plus the tools needed to install and finish the repair cleanly. Everything is organized in two blow-molded cases so parts stay sorted between jobs.

How will this kit restore a stripped thread?

The kit follows the standard drill-tap-insert method: you drill the damaged hole to a specific size, cut or chase the new thread with the tap, insert the coiled wire thread insert and break off the tang. This rebuilds the original holding strength by converting the damaged hole into a durable, threaded repair.

• Includes correctly sized 135° drill bits to clear damaged threads.
• Heat-treated high-speed steel taps form precise threads for the wire inserts.
• Coiled wire inserts re-create the original thread profile and strength.
• Tang break-off tools guarantee a flush, ready-to-use finish.

Will the tools hold up on tough jobs and different materials?

Yes — the drill bits and taps are made from heat-treated high-speed steel with a corrosion-resistant finish to resist wear. The kit is designed to work across common workshop metals, making it suitable for both occasional home repairs and repeated professional use.

• Heat-treated HSS components for durability and longer life.
• Corrosion-resistant finish protects tools from rust and contamination.
• Effective on aluminum, iron, carbon steel and many alloys.
• Components sized for both SAE and metric fasteners used in varied equipment.

Which thread sizes are included and how do I pick the right one?

The kit covers the most frequently encountered fastener sizes in automotive, machinery and household hardware. Match the original fastener’s nominal size (or measure the bolt) and use the corresponding drill, tap and insert from the set for a correct repair.

• SAE sizes: 1/4", 5/16", 3/8", 7/16", 1/2".
• Metric sizes: M5, M6, M8, M10, M12.
• Each size group includes drill, tap, inserts, installation and tang break-off tools.
• Clear case labeling keeps selection and workflow simple on the bench.

How do I transport and store the kit between jobs?

Two sturdy blow-molded cases are provided to separate SAE and metric components, keeping drills, taps, inserts and tools secure and organized. The cases are compact enough for a toolbox or van shelf and prevent loss of small parts during transport.

• Blow-molded storage cases for neat organization and portability.
• Compartmental layout prevents mixing of sizes and parts.
• Compact footprint fits in most tool chests or workshop drawers.
• Clear interior arrangement speeds up job prep and cleanup.

Who is this for: The Orion Motor Tech OMT 344-piece Thread Repair Kit is aimed at mechanics, metalworkers, fleet technicians and hands-on DIYers who need a reliable, all-in-one thread restoration solution. If you frequently encounter stripped or worn fastener holes in engines, gearboxes, brackets or machinery housings, this kit supplies the common sizes and robust tools to make durable repairs on a wide range of metals.