Best Threaded Inserts For 3D Prints

Looking for the best threaded inserts for your 3D prints? We’ve got you covered with a curated list of top options to enhance your projects.

3D printing has revolutionized how we create, but adding strong, reliable threads to plastic parts can be tricky. That’s where threaded inserts come in. They’re the secret to turning your prints into durable, professional-grade projects.

These small but mighty components are easy to install, corrosion-resistant, and built to last. They work perfectly with plastic and 3D-printed parts, ensuring a secure fit every time.

Whether you’re a hobbyist or a pro, finding the right threaded inserts can make all the difference. Let’s explore the best options to take your 3D prints to the next level.

List of Top 10 Threaded Inserts For 3D Prints

Title	Best For	Price
FFVRVSS 600+7Pcs M2 M2.5 M3 M4 M5 M6 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one Solutions	This all-in-one kit is perfect for 3D printing enthusiasts and DIY lovers. It’s also great for anyone working with plastic parts, like automotive or electronics projects.	View on Amazon (paid link)
Kadrick 520Pcs M2 M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts	This Kadrick Threaded Inserts Assortment Kit is perfect for 3D printing enthusiasts. It’s ideal for adding strong, reliable threads to plastic parts with ease.	View on Amazon (paid link)
Ktehloy 400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Assortment Kit, Brass Heat Set Insert for Plastic and 3D Printing Components (Threaded Inserts Ket)	This Ktehloy 400Pcs Threaded Inserts kit is perfect for 3D printing enthusiasts and makers who need a strong and reliable way to attach components to their plastic prints. If you’re working with thermoplastics like PLA, PETG, or ABS, these brass heat set inserts will make your projects more durable and professional.	View on Amazon (paid link)
Preciva Threaded Inserts Set, 300Pcs Heat Set Inserts with M2 M3 M4 M5 M6 M8 Insert-Tip, 100W Digital Soldering Iron, Holder and Tweezer, for 3D Printer Parts or Plastic Parts	This Preciva Threaded Inserts Set is perfect for 3D printing enthusiasts and makers who want to add strong, reusable threads to their plastic parts. It’s also ideal for anyone needing to easily create fastenable threads in plastic without damaging their projects.	View on Amazon (paid link)
FFVRVSS 320+6Pcs M2 M2.5 M3 M4 M5 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one	This all-in-one kit is perfect for 3D printing enthusiasts and DIY lovers. It’s also great for professionals working on plastic components, electronics, or automotive projects.	View on Amazon (paid link)
Professional Heat Set Insert Tool Kit: 80W Soldering Iron Heat Insert Tool with 520pcs Brass Inserts & Heat Set Insert Tips (M2-M8) for 3D Printing	This Professional Heat Set Insert Tool Kit is a game-changer for 3D printing enthusiasts and makers who want to add strong, reliable threads to their creations. If you’re looking to upgrade your prints with easy-to-install brass inserts, this all-in-one solution is for you!	View on Amazon (paid link)
Preciva Threaded Inserts Set, 716Pcs Heat Set Inserts Nuts Bolts with M2 M3 M4 M5 M6 Insert-Tip, 60W Soldering Iron and Holder, for 3D Printer Parts or Plastic Parts	This Preciva Threaded Inserts Set is perfect for 3D printing enthusiasts, DIYers, and professionals who want to add strong, reliable threads to their plastic parts with ease and precision.	View on Amazon (paid link)
Preciva M3 Threaded Inserts Set, 360Pcs Heat Set Bolts Nuts with M3 Insert Tip and 60W Digital Soldering Iron, for 3D Printer Parts or Plastic Parts	This Preciva M3 Threaded Inserts Set is perfect for 3D printing enthusiasts and anyone working with plastic parts. It makes adding strong, reliable threads to your projects incredibly easy and damage-free.	View on Amazon (paid link)
3DZWMAN Heat Set Insert Tools kit Brass Nuts 3D Printing 60W Digital Soldering Iron and 380 Pcs Kit Threaded Inserts with Insert Tips M2 M2.5 M3 M4 M5 M6(1/4) M8 for inserts 3d printing and plastic	This 3DZWMAN Heat Set Insert Tools Kit is perfect for 3D printing enthusiasts and professionals who need a reliable, portable soldering iron and a comprehensive set of threaded inserts. It’s ideal for industrial use and easy to carry, making it a great choice for anyone working with 3D-printed parts or plastics.	View on Amazon (paid link)
FFVRVSS 300+6Pcs M2 M2.5 M3 M4 M5 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one Solutions	This all-in-one kit is perfect for 3D printing enthusiasts, makers, and DIY lovers who want strong, reliable connections for their projects. It’s also great for professionals working with plastic components in electronics, automotive, or furniture.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 threaded inserts for 3D prints, handpicked for quality, durability, and ease of use. Each product is expert-reviewed and backed by customer feedback, ensuring you find the perfect fit for your projects. From premium brass kits to all-in-one solutions, these inserts are designed to enhance your 3D printing experience. Dive in to find the best threaded inserts that suit your needs and take your creations to the next level!

1. FFVRVSS 600+7Pcs M2 M2.5 M3 M4 M5 M6 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one Solutions

FFVRVSS 600+7Pcs M2 M2.5 M3 M4 M5 M6 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one Solutions

This FFVRVSS Brass Threaded Inserts Kit includes 6 sizes of M2, M2.5, M3, M4, M5, and M6 inserts. It also comes with a heat set tool for easy use. Perfect for 3D printing and plastic parts.

Made from premium brass, this kit resists corrosion, oxidation, and breakage. The precision design ensures a secure grip and prevents slipping during installation.

Each insert is stored in a separate compartment with clear labels for easy access. This organized system saves you time and helps keep your workspace neat.

Pros	Cons
6 essential sizes in one affordable kit, saving time and money. Premium brass ensures durability and long-lasting performance. Precision design guarantees secure, slip-free installation every time. Organized storage keeps inserts sorted and easy to find. Universal compatibility works with all thermoplastics and projects.	No extra tools included for complex projects. Limited sizes; missing larger or smaller options. Brass material may not suit all applications.

Perfect For:

This all-in-one kit is perfect for 3D printing enthusiasts and DIY lovers. It’s also great for anyone working with plastic parts, like automotive or electronics projects.

Ready to Purchase?

View Price on Amazon (paid link)

Best Press Fitting Inserts

2. Kadrick 520Pcs M2 M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts

Kadrick 520Pcs M2 M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts

Upgrade your 3D prints with Kadrick’s brass threaded inserts. These heat-in nuts add strong threads to your plastic parts. They are a perfect solution for your projects.

These inserts come in common sizes like M2, M3, M4, and M5, with heights from 3mm to 12mm. This kit ensures you have the right size for any need.

Made from high-quality brass, these knurled inserts offer superior grip and corrosion resistance. They are clearly labeled and come in a convenient storage box.

Pros	Cons
Perfect for 3D printing with easy heat embedding. Knurled inserts offer stronger grip and better tensile strength. Clear labeling for easy identification and use. Durable brass construction with heat and corrosion resistance.	Limited to specific 3D printing applications. Requires heat or ultrasound for installation. No imperial sizes, only metric.

Perfect For:

This Kadrick Threaded Inserts Assortment Kit is perfect for 3D printing enthusiasts. It’s ideal for adding strong, reliable threads to plastic parts with ease.

Ready to Purchase?

View Price on Amazon (paid link)

3. Ktehloy 400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Assortment Kit, Brass Heat Set Insert for Plastic and 3D Printing Components (Threaded Inserts Ket)

Ktehloy 400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Assortment Kit, Brass Heat Set Insert for Plastic and 3D Printing Components (Threaded Inserts Ket)

Get 400 threaded inserts for your projects! These are made of brass and come in sizes M2 to M6. They’re perfect for plastic and 3D printing.

These high-quality inserts are built to last. They resist heat and won’t easily break or bend.

Installation is a breeze! Use a soldering iron or ultrasonic methods. They offer a strong and stable connection for all your needs.

Pros	Cons
400-piece kit covers all your 3D printing needs. Brass inserts resist heat, corrosion, and breakage. Easy installation with soldering iron or heating methods. Fits all thermoplastics, from PLA to ABS. Precision threading ensures strong, reliable fastening.	Limited sizes – Only metric sizes, no imperial options available. Requires heat – Heat source needed for installation, not ideal for all users. No storage case – 400 pieces come loose, making organization tricky.

Perfect For:

This Ktehloy 400Pcs Threaded Inserts kit is perfect for 3D printing enthusiasts and makers who need a strong and reliable way to attach components to their plastic prints. If you’re working with thermoplastics like PLA, PETG, or ABS, these brass heat set inserts will make your projects more durable and professional.

Ready to Purchase?

View Price on Amazon (paid link)

4. Preciva Threaded Inserts Set, 300Pcs Heat Set Inserts with M2 M3 M4 M5 M6 M8 Insert-Tip, 100W Digital Soldering Iron, Holder and Tweezer, for 3D Printer Parts or Plastic Parts

Preciva Threaded Inserts Set, 300Pcs Heat Set Inserts with M2 M3 M4 M5 M6 M8 Insert-Tip, 100W Digital Soldering Iron, Holder and Tweezer, for 3D Printer Parts or Plastic Parts

Upgrade your 3D printing projects with the Preciva Threaded Inserts Set! This complete kit makes it super easy to add strong, fastenable threads to your plastic parts.

It includes a 100W digital soldering iron for precise heat. Swap tips quickly for different sizes. Protect your prints with damage-free installation.

Pros	Cons
300-piece set with 6 insert tips for all your needs. Digital soldering iron adjusts from 200°C to 500°C easily. Quick tip replacement without unscrewing the sleeve. Protects 3D prints from damage during insert installation.	High power may be too much for some users. No auto-shutoff feature for safety. Tips can wear out quickly with heavy use.

Perfect For:

This Preciva Threaded Inserts Set is perfect for 3D printing enthusiasts and makers who want to add strong, reusable threads to their plastic parts. It’s also ideal for anyone needing to easily create fastenable threads in plastic without damaging their projects.

Ready to Purchase?

View Price on Amazon (paid link)

5. FFVRVSS 320+6Pcs M2 M2.5 M3 M4 M5 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one

FFVRVSS 320+6Pcs M2 M2.5 M3 M4 M5 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one

This FFVRVSS Brass Threaded Inserts Kit is a great all-in-one solution for 3D printing. It includes the five most commonly used sizes: M2, M2.5, M3, M4, and M5. The kit also comes with a heat set insert tool for easy use.

Made from premium brass, these inserts offer stronger durability and resist corrosion and breakage. They have precision threading and a spiral knurled design for a secure grip. The tool is perfectly compatible, making your installation smooth and hassle-free.

Each insert size is stored in its own compartment for easy identification. These inserts work with all common thermoplastics, ensuring reliable retention.

Pros	Cons
5 Sizes Included – Get all essential metric sizes in one kit. Premium Brass – Durable, corrosion-resistant, and long-lasting. Easy Organization – Sealed compartments keep inserts sorted and ready. Universal Fit – Works with all thermoplastics and projects.	Limited sizes available, may not fit all project needs. No storage case, requires separate organization for long-term use. Heat tool needs careful handling to avoid damage.

Perfect For:

This all-in-one kit is perfect for 3D printing enthusiasts and DIY lovers. It’s also great for professionals working on plastic components, electronics, or automotive projects.

Ready to Purchase?

View Price on Amazon (paid link)

6. Professional Heat Set Insert Tool Kit: 80W Soldering Iron Heat Insert Tool with 520pcs Brass Inserts & Heat Set Insert Tips (M2-M8) for 3D Printing

Upgrade your 3D printing with this all-in-one heat set insert tool kit. It features a smart 80W soldering iron that heats up super fast, in less than 30 seconds, making it a breeze to add threaded inserts to your projects.

This kit comes with everything you need, including 7 different brass tips for common screw sizes and 520 corrosion-resistant brass inserts. It’s a cost-effective bundle that saves you money compared to buying everything separately.

Get professional results. Make your prints stronger. It’s easy to use.

Pros	Cons
Rapid heating for quick results (≤30 seconds). Complete kit with 520 brass inserts and 7 tips. Compatible with PLA, ABS, and Nylon for 3D printing. Affordable bundle saves $20+ compared to separate items. Reliable brand with a 12-month warranty.	Limited to 3D printing use, not for general soldering. No carrying case included for storage or travel. High power consumption at 80W, may not suit all setups.

Perfect For:

This Professional Heat Set Insert Tool Kit is a game-changer for 3D printing enthusiasts and makers who want to add strong, reliable threads to their creations. If you’re looking to upgrade your prints with easy-to-install brass inserts, this all-in-one solution is for you!

Ready to Purchase?

View Price on Amazon (paid link)

7. Preciva Threaded Inserts Set, 716Pcs Heat Set Inserts Nuts Bolts with M2 M3 M4 M5 M6 Insert-Tip, 60W Soldering Iron and Holder, for 3D Printer Parts or Plastic Parts

Preciva Threaded Inserts Set, 716Pcs Heat Set Inserts Nuts Bolts with M2 M3 M4 M5 M6 Insert-Tip, 60W Soldering Iron and Holder, for 3D Printer Parts or Plastic Parts

The Preciva Threaded Inserts Set is a 716-piece kit perfect for 3D printing and plastic parts. It includes threaded inserts, bolts, nuts, washers, and a 60W soldering iron. This set has everything you need for easy installation.

The heat-set insert tips ensure clean embedding into plastic, creating strong threads. The split design lets you switch tips quickly without hassle. It’s beginner-friendly and professional-grade.

This kit protects your 3D prints by reducing surface damage. It comes with 5 popular sizes and complete accessories. Customer support is ready to help with any questions.

Pros	Cons
Complete set with inserts, bolts, nuts, and tools. Easy to use heat-set tips for plastic parts. Quick tip change without unscrewing the soldering iron. Safe for 3D prints, reduces surface damage risk. Great for DIY beginners and professionals alike.	60W iron may be too hot for some plastic parts. No storage case included for small parts. Learning curve needed for beginners to master heat-set technique.

Perfect For:

This Preciva Threaded Inserts Set is perfect for 3D printing enthusiasts, DIYers, and professionals who want to add strong, reliable threads to their plastic parts with ease and precision.

Ready to Purchase?

View Price on Amazon (paid link)

8. Preciva M3 Threaded Inserts Set, 360Pcs Heat Set Bolts Nuts with M3 Insert Tip and 60W Digital Soldering Iron, for 3D Printer Parts or Plastic Parts

Preciva M3 Threaded Inserts Set, 360Pcs Heat Set Bolts Nuts with M3 Insert Tip and 60W Digital Soldering Iron, for 3D Printer Parts or Plastic Parts

The Preciva M3 Threaded Inserts Set is a complete kit for 3D printing and plastic parts. It includes 360 pieces of bolts, nuts, and inserts. The set also comes with a 60W digital soldering iron for easy installation.

The heat-set insert tips ensure clean and seamless embedding into plastic. The soldering iron has a wide temperature range for precise work. It’s easy to switch tips without unscrewing the sleeve.

This kit protects your 3D printed parts from damage. The ideal tip geometry reduces the risk of surface harm. Customer support is available for any questions or concerns.

Pros	Cons
Effortless plastic thread creation. Quick and clean insert installation. Precise temperature control for soldering. Protects your 3D prints from damage. Easy tip changes for any job.	Limited to M3 size, not suitable for larger projects. Soldering iron requires careful handling to avoid burns. No storage case, parts may get lost easily.

Perfect For:

This Preciva M3 Threaded Inserts Set is perfect for 3D printing enthusiasts and anyone working with plastic parts. It makes adding strong, reliable threads to your projects incredibly easy and damage-free.

Ready to Purchase?

View Price on Amazon (paid link)

9. 3DZWMAN Heat Set Insert Tools kit Brass Nuts 3D Printing 60W Digital Soldering Iron and 380 Pcs Kit Threaded Inserts with Insert Tips M2 M2.5 M3 M4 M5 M6(1/4) M8 for inserts 3d printing and plastic

3DZWMAN Heat Set Insert Tools kit Brass Nuts 3D Printing 60W Digital Soldering Iron and 380 Pcs Kit Threaded Inserts with Insert Tips M2 M2.5 M3 M4 M5 M6(1/4) M8 for inserts 3d printing and plastic

The 3DZWMAN Heat Set Insert Tools Kit is made for 3D printing and plastic projects. It comes with a 60W digital soldering iron. You can use it to add threaded inserts easily.

This kit includes 380 pieces of threaded inserts. It works with sizes M2 to M8. The kit also has insert tips for different projects.

The soldering iron is corded and portable. It is good for industrial use.

Pros	Cons
Powerful 60W soldering iron heats up fast. Massive 380-piece kit for all your needs. Easy to use for 3D printing inserts. Versatile sizes: M2 to M8 included. Portable design for on-the-go use.	Soldering iron might feel less robust for heavy use. Portability is good, but storage could be tidier.

Perfect For:

This 3DZWMAN Heat Set Insert Tools Kit is perfect for 3D printing enthusiasts and professionals who need a reliable, portable soldering iron and a comprehensive set of threaded inserts. It’s ideal for industrial use and easy to carry, making it a great choice for anyone working with 3D-printed parts or plastics.

Ready to Purchase?

View Price on Amazon (paid link)

10. FFVRVSS 300+6Pcs M2 M2.5 M3 M4 M5 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one Solutions

FFVRVSS 300+6Pcs M2 M2.5 M3 M4 M5 Premium Brass Threaded Inserts, Metric Brass Knurled Nuts Assortment Kit, with Heat Set Insert Tool, for Plastic and 3D Printing Components, All-in-one Solutions

The FFVRVSS Brass Threaded Inserts Kit has 300+ pieces in common sizes: M2, M2.5, M3, M4, and M5. It comes with a heat set tool for easy installation.

Made from premium brass, these inserts are strong and long-lasting. They resist rust, breakage, and deformation for reliable use.

The kit is easy to organize with labeled compartments. Works with all plastics. Perfect for 3D printing, electronics, and DIY projects.

Pros	Cons
Save money with this all-in-one kit. Strong brass for lasting durability. Secure grip prevents slipping. Easy to find and organize. Works with many plastics and projects.	Limited sizes available, may not fit all project needs. No storage case included, organization can be tricky. Heat tool requires careful handling to avoid damage.

Perfect For:

This all-in-one kit is perfect for 3D printing enthusiasts, makers, and DIY lovers who want strong, reliable connections for their projects. It’s also great for professionals working with plastic components in electronics, automotive, or furniture.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

3D printing is fun, but adding strong threads to plastic parts can be tricky. Threaded inserts make it easy.

Choosing the right threaded inserts can turn your prints into durable, professional-grade projects. Here’s what to look for:

Material:
Brass is the best choice. It’s corrosion-resistant, strong, and works well with plastic.
Sizes:
Pick a kit with common sizes like M2, M3, M4, and M5. This ensures you’re ready for any project.
Ease of Installation:
Look for kits with heat set tools or soldering irons. They make installation quick and hassle-free.
Quantity:
Choose a kit with enough pieces for multiple projects. This saves time and money.
Organization:
Kits with labeled compartments keep inserts sorted and easy to find.
Compatibility:
Ensure the inserts work with all plastics and 3D-printed parts for reliable results.
Durability:
Go for inserts that resist breakage, rust, and deformation for long-lasting use.

With these tips, you’ll find the perfect threaded inserts to upgrade your 3D prints!