Best Threading Indexable Inserts of 2025

Harvey Wall Avatar
Harvey Wall
Last Updated: 29 Jan 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Threading indexable inserts are a type of cutting tool used in the manufacturing industry to create threads on metal surfaces. These inserts are made from high-quality materials and are designed to provide precision and accuracy in threading operations. They come in a variety of sizes and designs to suit different threading needs, and can be easily replaced when worn out. Threading indexable inserts are a cost-effective solution for businesses looking to increase their productivity and quality of work, and are recommended for those in the machining and manufacturing industry.

At a Glance: Our Top Picks

V-Coil 4108 5/16-inch Thread Repair Kit Cover #TOP 1
V-Coil 4108 5/16-inch Thread Repair Kit
ftb score rating icon 9.8
MAXTOOL 16NR12ACME Internal Acme Threading Inserts Cover #TOP 2
MAXTOOL 16NR12ACME Internal Acme Threading Inserts
ftb score rating icon 9.7
KinRite 11ER/11IR AG60 Threading Inserts Set Cover #TOP 3
KinRite 11ER/11IR AG60 Threading Inserts Set
ftb score rating icon 9.5

Top 10 Threading Indexable Inserts

#TOP 1

V-Coil 4108 5/16-inch Thread Repair Kit

04108
V-Coil 4108 5/16-inch Thread Repair Kit Cover
V-Coil 4108 5/16-inch UNC Thread Repair Kit

The V-Coil 4108 Kit is an essential tool for anyone needing to repair damaged threads. It features a size of 5/16" x 18 UNC, ensuring compatibility with a variety of applications. The complete kit includes a high-speed steel tap and drill, making it convenient for you to start repairs immediately. The aerospace-grade stainless steel wire thread inserts are durable and reliable, offering enhanced performance. With its precise tolerances, the reformed thread is often stronger than the original, giving you confidence in your repairs.

What We Like
Includes necessary drill
High-quality materials
Stronger than original threads
Easy to use
#TOP 2

MAXTOOL 16NR12ACME Internal Acme Threading Inserts

16NR12ACME-M20
Gold
MAXTOOL 16NR12ACME Internal Acme Threading Inserts Cover
MAXTOOL 2PCs 16NR12ACME Internal American Acme Indexable Threading Inserts 3/8" I.C. 12 TPI Carbide TIALN-Coat; 16NR12ACME-T02

The MAXTOOL 16NR12ACME Inserts are crafted from premium solid carbide, ensuring durability and longevity. With a 3/8" I.C. and 12 TPI at a 29° angle, they are designed for effective threading. The TIAIN coating makes them suitable for general cutting at lower speeds, enhancing their versatility. Additionally, these inserts excel at cutting non-ferrous materials like brass and aluminium, providing you with a reliable choice for various applications. Their excellent anti-built-up and chipping resistance further ensures smooth operation and improved performance.

What We Like
Premium solid carbide construction
Effective for non-ferrous materials
Lower cutting speed suitability
Excellent resistance to chipping
#TOP 3

KinRite 11ER/11IR AG60 Threading Inserts Set

KinRite
Gold
11ER/11IR
KinRite 11ER/11IR AG60 Threading Inserts Set Cover
5pcs 11ER AG60 External Threading Inserts + 5pcs 11IR AG60 Internal Threading Inserts CNC Lathe Indexable Threading Carbide Insert Blade for Threading Tool Holder Pitch: 0.5-1.5mm

The KinRite AG60 Inserts are designed for both external and internal threading applications. With a blade length of 16mm and a machining pitch range of 0.5 to 1.5mm, they offer versatility for various threading needs. The carbide construction, enhanced with TIAIN coating, ensures durability and resistance to wear, making these inserts ideal for machining stainless steel and steel parts. You will find these inserts compatible with threading tool holders, providing a reliable solution for your machining tasks.

What We Like
Durable carbide construction
Versatile pitch range
Compatible with threading tool holders
Includes both external and internal inserts
#TOP 4

OSCARBIDE Internal Threading Boring Bar Tool Holder

SIR06
OSCARBIDE Internal Threading Boring Bar Tool Holder Cover
OSCARBIDE 3/4" x 7"Internal Indexable Threading Boring Bar SIR0625Q16 Tool Holder with Carbide Internal Threading Insert 16IR AG60, 1 Piece

The OSCARBIDE Boring Bar features a robust 3/4" shank diameter and an overall length of 7 inches, making it ideal for various threading tasks. The solid carbide insert provides long tool life and enhances cutting speed, allowing you to work more efficiently. With its capability to accept different threading profiles, you can tackle a range of internal threading applications with ease. This tool is especially useful for semi-finishing and roughing machining of steel, simplifying your projects and improving productivity.

What We Like
Long tool life
Faster cutting speed
Versatile threading options
Ideal for small hole machining

Rennie Tool Coated Carbide Threading Inserts

16IR AG
AG55 (55 Deg)
Rennie Tool Coated Carbide Threading Inserts Cover
16IR AG55 P25C Coated Carbide Threading Inserts - Internal Partial Profile/Profiling - For Steel, Non Ferrous, Cast Iron Etc

The Rennie Tool Threading Inserts are designed for internal threading applications, making them ideal for various materials like steel, non-ferrous metals, and cast iron. With a general purpose PVD coated grade, these inserts offer durability and efficiency in your threading tasks. The coated carbide construction enhances performance, ensuring smoother operations and longer tool life. You will appreciate the convenience of having a versatile insert that caters to different materials, allowing you to tackle a range of projects with ease.

What We Like
Durable coated carbide construction
Suitable for multiple materials
Designed for internal threading
General purpose PVD coating
#TOP 6

HHIP 5/8" External Indexable Tool Holder Kit

2301-1750
5/8" Shank
HHIP 5/8" External Indexable Tool Holder Kit Cover
HHIP 2301-1750 External Indexable Threading Tool Holder and Insert Kit, 5/8"

The HHIP Threading Tool Kit is designed to enhance your threading tasks with ease. Featuring a 5/8" external indexable threading tool holder, it allows for precise right-hand external thread cuts, making your work more efficient. The kit comes with 10 TiN coated carbide inserts, which provide durability and longevity, ultimately saving you time and money. Additionally, it includes a Torx wrench for added convenience, ensuring you have everything you need for quick adjustments and replacements during your projects.

What We Like
Durable carbide inserts
Convenient Torx wrench included
Precise right-hand threading
Efficient threading tasks
#TOP 7

Yosoo Health Gear Self Tapping Thread Inserts

Yosoo Health Gear1m2cioqnhy
Silver
Yosoo Health Gear Self Tapping Thread Inserts Cover
Yosoo Health Gear Stainless Steel Thread Insert, Self Tapping Thread Insert, Inner Thread Inserts to Improve Strength and Stability of Screws Connection and Repair the Damaged Thread

The Yosoo Health Gear Thread Inserts offer excellent performance by forming high-strength internal threaded holes in soft materials like plastic and copper. They improve the strength and stability of screw connections, providing elasticity and uniform load distribution, which helps prevent loosening. Crafted from high-quality stainless steel, these inserts ensure durability with low wear and a long service life. Additionally, they are easy to install using just one assembly tool, making repairs quick and straightforward for you.

What We Like
Improves screw connection stability
Made from durable stainless steel
Easy and quick installation
Effective for repairing damaged threads
Versatile for various applications
#TOP 8

CNC Kitchen 1/4 Inch Thread Inserts for 3D Printing

CNC KITCHEN
Threaded inserts
CNC Kitchen 1/4 Inch Thread Inserts for 3D Printing Cover
CNC Kitchen Original Thread Insert, 1/4 Inch - 20 x 12.7 mm, 20 Pieces, e.g. for Camera Threads; 100% Lead and Cadmium Free

The CNC Kitchen Thread Inserts make it easy to enhance your 3D printed components. They are designed for straightforward assembly using a soldering iron, providing a reliable solution for creating strong attachments. These inserts turn your prints into professional-grade functional parts, adding durability and versatility to your projects. Made from lead and cadmium free brass, they are environmentally friendly and compliant with safety standards, ensuring you can use them with peace of mind.

What We Like
Easy assembly with soldering iron
Transforms prints into functional parts
Environmentally friendly materials
Compliant with safety standards
#TOP 9

MABUARN Carbide Threading Inserts for Machining

MABUARN
IR/ER AG60 -10
11IR AG60
MABUARN Carbide Threading Inserts for Machining Cover
MABUARN Carbide Threading Insert IR/ER Lathe Internal/External Thread Holder Indexable Inserts IR/ER AG60 for Steel Metal Machining, 10 Pieces/Pack (11IR AG60, for Aluminum Machining)

The MABUARN Threading Inserts are crafted from solid carbide and feature a durable TiN coating, enhancing their wear resistance and sharpness for extended service life. These inserts are versatile, suitable for machining a variety of materials including steel, cast iron, and aluminium. You will find them applicable for both internal and external threading using compatible tools such as SNR/L and SER/L. This pack includes 10 inserts, conveniently packaged in a plastic box, making it easy for you to keep your workspace organised.

What We Like
Durable solid carbide material
TiN coating for longevity
Versatile for various materials
Suitable for internal/external threading
Convenient 10-piece pack
#TOP 10

E-Z LOK Threaded Inserts for Plastic

HI-316-WH
Brass
One Size
E-Z LOK Threaded Inserts for Plastic Cover
E-Z LOK Threaded Insert for Plastic Straight Flush Brass Thread Inserts 3/8-16 Pack of 25

The E-Z LOK Plastic Inserts are designed to simplify your projects involving thermoplastic materials. These threaded inserts allow for easy post-moulding installation, ensuring a secure fit in your 3D printed parts. You can install them using ultrasonic methods or a heat driver, making the process straightforward and efficient. Their tapered design aids installation, helping you achieve a reliable outcome with minimal effort. Whether you need flush or flanged configurations, these inserts cater to various material thicknesses, providing versatility for your applications.

What We Like
Easy installation process
Versatile for different materials
Strong and durable brass construction
Available in multiple styles
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a threading insert?

A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole.

2. What are the different types of threading inserts?

When turning a thread, there are three main insert types to choose from: full profile, V-profile, and multi-point inserts. Each type has its advantages and disadvantages.

3. What is a partial profile threading insert?

Partial-profile inserts cut without topping the outer diameter of the thread, allowing the same insert to be used for a range of thread pitches that have a common thread angle. ... For every thread pitch and standard, a separate insert is required.

Editor's Notes

During our threading indexable insert research, we found 29 threading indexable insert products and shortlisted 10 quality products. We collected and analyzed 3,462 customer reviews through our big data system to write the threading indexable inserts list. We found that most customers choose threading indexable inserts with an average price of £26.62.

The threading indexable inserts are available for purchase. We have researched hundreds of brands and picked the top brands of threading indexable inserts, including V-Coil, MaxTool, KinRite, OSCARBIDE, Rennie Tool Company.

Written by
Harvey Wall Avatar

Harvey Wall was born and raised in Norwich. He mastered the art of tool production and finished at the prestigious Norwich University. His area of interest include cutting tools, abrasive finishing and power tools. Harvey is always looking for ways to improve the finesse of industrial tools via his myriads of researches. He also shares some of his experiences on many platforms while writing on tool products.