Thread size: M5 X 0.8mm. Thread tap and the drill material: HSS (High-speed Steel). Check that thread and pitch of the tap and the bolt match. To repair a spark plug thread no Pre-drilling is necessary if using the special Spark Plug Tap.
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1/2" 3/4" 1" Brass Quick Connector BSP Female Thread 16mm Pacifier Nipple Coupling Adapter for Garden Irrigation Connect Repair
Aliexpress UK
Produce a stronger internal thread in soft materials. Kit Includes: This kit including thread inserts, thread tapping tool, twist drill bit, lug break pin, insert installation tool, etc. 10 x Thread Inserts.
eBay
Pipe Threading Kit BSPT Thread Cutting Steel Threader Plumbers Set with 4/6 Threading Dies Manual Pipe Threader Tool Kit
Aliexpress UK
The thread size is standard, the thread is clear, and it will be more accurate for thread sliding tooth restoration. The wire threaded sleeve is female thread fastener with certain elasticity, which can enhance the connection strength of the thread.
eBay
5-Piece NPT Pipe Tap Set, Professional Pipe Taps Set, Precision Threading Tool Kit for Pipe Taper Threads
Aliexpress UK
20 x Helicoil inserts. Supplied in a blow molded case for easy storage and transportation. Creates a stronger internal thread in soft materials. 1 x Thread tap. 1 x Insert installation tool. Set Includes;.
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Snap Pliers Set Repair Hand Tools For Animal Cages, Wire Fencing And Railing Repair Tool, Type M Nail Pliers
Aliexpress UK
M12 X 1.75 HELICOIL THREAD REPAIR KIT. 12MM X 1.75THREAD REPAIR KIT. 2 X INSERT TOOLS. 10PC BOXED SET.
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Cabinet Hinge Repair Plate Kit Stainless Steel Hinge Repair Plate for Protecting Wooden Kitchen Cabinet Door
Aliexpress UK
Thread Sizse: M5 M6 M7 M8 M9 M10 M12 M14. For example: "M5 X0.8 + Tool Kit ", "M6 X 1.0 + Tool Kit ", "M8 X 1.35 + Tool Kit ". M9 x 1.25 10/25PC Inserts. For example: "M5 X0.8 ", "M6 X 1.0 ", "M8 X 1.35 ".
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Fence Repair Kit 2X Thickened Metal Fence Support Stakes Solid Ground Spike Quick Fix Post Stabilizer For Repair Tilted Broken
Aliexpress UK
This kit contains everything you need to fix M5 up to M12 and 1/4 to 1/2 UNC sized threads, including high-quality stainless steel helical inserts. Tap drilled hole using screw tap provided. Load thread insert into installation tool.
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10pcs Underwater Repair Patches Self-Adhesive PVC Pool Repair Kit Multifunctional Wear-Resistant Household Accessories
Aliexpress UK
The threaded insert can be used as a repairing ways to economically and effectively repair the threaded hole. -imperial units threaded hole conversion with threaded insert, it is convenient and fast.
eBay
Professional Porcelain Repair Kit Strong Ceramic Glue Adhesive for Vases, Plates, Toilets Waterproof Repair for Chips & Cracks
Aliexpress UK