Best Thread Inch Inserts Repair Kits in 2026

RT1 = .375 inch Dia., RT2 = .75 inch Dia., RT2L = .75inch Dia., RT4 = 40mm, RT5 = 50mm.

Restore dent, dinged, or damaged threads in nuts and bolts within a minute with the RT2 Rotary Thread File! Restoring threads on the smallest bolts and getting into deep nuts without worrying about getting the right pitch is exactly what you’ll get with the RT2.

The ingenious universal design of our thread file is what makes it stand out from other thread files. All inch, metric and pipe threads have the same 60 degree "V" angle. This allows this tool to quickly work on any project, both internal and external threads.

【WIDELY USED】: Our drill and tap set creates a stronger internal thread in soft metals and protects tapped threads against wear and damage. It is suitable for repair stripped or damaged internal threads and widely used in automotive and plumbing applications.

【SAE & METRIC】: Standard 261pcs thread repair kit, includes HSS drill bits, wire thread inserts, STI taps, installation and tang break tools. 1/4", 5/16", 3/8", 7/16", 1/2", M5, M6, M8, M10, M12 of SAE and metric sizes get you fully equipped.

【EXCELLENT MATERIAL】: The helicoil kit is made of high-speed steel, with better hardness and toughness after heat treatment. Chrome finish surface is for anti-rust. The thread inserts made of heat-treated 45# steel has better toughness and is not easy to wear and deformation. Extended service life.

Extremely stable performance: This thread helical coil repair tool kit is made of high speed steel and red color plastic handle, sturdy and durable in use and can be used in daily repair, car repair, drilling machine, etc; Made of stainless steel of good rust and corrosion resistant.

Excellent practicability: The wire screw set is placed in the screw hole of the workpiece such as aluminum alloy to form a standard internal thread with high strength, wear resistance and high precision. Typical applications: high voltage switchgear, microwave communication, automotive parts, air separation equipment, radiators, etc.

Cost effective thoughtful kit: The use of wire screw sleeves for mm ---inch threaded hole conversion is convenient and fast. The imported equipment or mechanical inch thread is damaged, and it needs to be changed to mm thread due to the supply of spare parts; All accessories are integrated in a box for convenient transportation and carriage.

ALL-IN-ONE KIT: This 304-piece thread repair kit by Orion Motor Tech includes drill bits, screw taps, wire thread inserts, and installation & tang break-off tools in the 5 most needed SAE and metric sizes: 1/4", 5/16", 3/8", 7/16", and 1/2" as well as M5, M6, M8, M10, and M12

PURPOSE BUILT: Each tool of this heavy-duty helicoil kit is made of quality steel for durable handling and is heat treated for greater strength and longevity in place

WIDE APPLICATION: Our universal rethreading tool kit is ideal for restoring stripped or damaged internal threads as well as for performing maintenance work to protect any threads from wear and tear

[Repair Your Threads]: Renew damaged or stripped threads with the ABN 261 Piece Screw Thread Repair Tool Set; Heavy duty coil repair kit rethreading kit works on steel, cast iron, aluminum alloy, and copper

[Size for Every Project]: Each thread saver automotive thread restorer kit features both metric and standard sizes including M12 x 1.75, M10 x 1.5, M8 x 1.25, M6 x 1.0, and M5 x 0.8; 1/2in-13, 7/16in-14, 5/16in-18, 3/8in-16, and 1/4in-20

[Complete Coil Master Kit]: U flute drill bits, threaded screw taps, handled thread insert tools, breaking tools and wire thread inserts are included in each size so you have the right tools for every project

UNIVERSAL THREAD REPAIR TOOLS - one hand tool repairs inch or metric, right or left handed, coarse or fine threads

QUICK SIZING - no need for a caliper or pitch gauge to determine diameter or thread count or type

RAPID ADJUSTMENT - tool adjusts and quickly adapts to particular diameter and pitch of fastener thread

What included- 25pc thread repair kit including thread inserts, drill bit, thread tap, insert installation, lug breaking tool, allow you have smooth repairing experience.

Material & Workmanship- stainless steel(Thread inserts) ;HSS(Thread tap and the drill); Surface electrophoresis (Wrench)

Application- Suitable for engine repair and other automotive applications, for restoring the damaged threads.

Don't Replace, Repair: This 48-piece thread chaser set by Orion Motor Tech includes 22 taps, 24 dies, and 2 thread files in metric and SAE sizes to help clean and restore worn, damaged threads so you don't have to spend a fortune buying new ones

Complete Metric & SAE Sizes for Versatile Use: Our rethreading taps and dies come in the most commonly used UNC, UNF, and metric sizes—1/4", 3/8", 5/8", 1/2", 5/16", 7/16", and 9/16" as well as M6, M8, M10, M11, M12, and M14—to meet various needs

Strongly Built for Dependable Durability: These thread restorer tools are made of high-quality steel with a black oxide or zinc coating for lasting strength and corrosion resistance

CNC machining with color anode treatment, beautiful and durable, fine workmanship, , will not scratch your car.

Show the beauty characteristic, prefect to decorate your motorcycle, catch everybody's eye on the road, there are 3 different color for your to choose, meet your different need.

Made of high quality metal, high strength, good stability and durability with high resistance to rust and corrosion suitable for 1/10 1/8 car.

WIDE APPLICATION: Thread Repair is commonly used in hydraulic machinery, welding equipment, auto parts, power machinery and furniture, etc. Thread Repair is widely used in automobile industry, rail car industry, ship industry, household appliances and many other places

USE EFFECT: The screw socket can be used to convert between metric and inch threaded holes, which is convenient and fast. Thread Repair have superior rust resistance and the excellent of oxidation resistance. High hardness for long time service

THE MAIN FUNCTION: If thread processing error occurs or female threaded hole is damaged, the wire thread insert is a good maintenance tool. Thread Repair can prevent loosening of screws, especially for products requiring high safety factor