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  • VIDEO
Besitu 360Pcs M2 M2.5 M3 M4 M5 M6 Threaded Inserts for Plastic and 3D PrintsBesitu
  • Besitu 360Pcs Threaded Inserts M2 M2.5 M3 M4 M5 M6 Brass Heat Set Insert for Plastic Metric Knurled Nut Inserts Kit for 3D Printing Components Injection Molding
  • To view this video, download

Besitu 360Pcs Threaded Inserts M2 M2.5 M3 M4 M5 M6 Brass Heat Set Insert for Plastic Metric Knurled Nut Inserts Kit for 3D Printing Components Injection Molding

4.7 out of 5 stars 81 ratings
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Purchase options and add-ons

Material Brass
Fastener type Insert
Thread size M2 M2.5 M3 M4 M5 M6
Exterior finish Brass
Colour Yellow
Metal type Brass
Drive system Spline
Brand Besitu
Item dimensions L x W x H 15.2 x 8.9 x 1.8 Centimetres
Item weight 220 Grams

About this item

  • 【WIDE VARIETY OF SIZES】This kit includes metric threaded inserts in different sizes and lengths, including M2 M2.5 M3 M4 M5 M6, 360Pcs in total. Providing you with a wide selection to meet your specific needs.
  • 【HIGH QUALITY BRASS】The threaded inserts are made of high-quality brass, which offers excellent durability and corrosion resistance. This ensures that the inserts will securely fastern into your plastic or 3D printed parts and maintain their integrity over time.
  • 【FIRM HOLD AND EASY INTALLATION】Each insert features female threads and a knurled exterior, which provide enhanced grip and stability when installed. The knurled design allows for easy insertion and ensures a tight fit, preventing the inserts from coming loose under normal operating conditions.
  • 【ORGANIZED PACKAGING BOX】With a total of 350 pieces, this assortment kit offers a sufficient quantity of threaded inserts to support multiple projects. The organized packaging makes it easy to locate and access the specific inserts you require, saving you time and improving efficiency during work.
  • 【WIDE APPLICATIONS】The threaded inserts kit is not limited to 3D printing applications. It can also be used for injection molding, wood working, and various repair and restoration projects. The inserts can be used to create strong threaded holes in a variety of materials, including ABS, PLA, PETG, nylon, and wood.
  • 【TWO YEAR WARRANTY】Order your own set of threaded inserts today, you would love it. and if you have any quesitons and problems, please feel free to contact us, we would provide the best solution within 12 hours.
› See more product details

Product details

  • Product Dimensions ‏ : ‎ 15.24 x 8.89 x 1.78 cm; 220 g
  • Date First Available ‏ : ‎ Nov. 21 2023
  • Manufacturer ‏ : ‎ Besitu
  • Place of Business ‏ : ‎ Besitu
  • ASIN ‏ : ‎ B0CNRSJ1B2
  • Item model number ‏ : ‎ M2 M2.5 M3 M4 M5 M6
  • Country of origin ‏ : ‎ China
  • 鶹 Rank: #10,862 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
  • Customer Reviews:
    4.7 out of 5 stars 81 ratings

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    Our goal is to provide the best quality, reliable and affordable portable Fasteners products to users worldwide.

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Product Description

heat inserts
thread inserts for plastic
thread inserts
m3 inserts
brass threaded inserts
thread insert kit

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Customer reviews

4.7 out of 5 stars
81 global ratings

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Customers say

Customers like the functionality, installation, and quality of the nuts. They mention they work great for creating a solid and reusable anchor point in their 3D prints. Customers also say the threads screw in nice and tight, and the product is durable and will last a long time. They also say the inserts provide a strong hold and set very securely in their prints.

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FunctionalityInstallationQualitySecure fit
10 customers mention "Functionality"10 positive0 negative

Customers like the functionality of the product. They mention it works great for creating a solid and reusable anchor point in 3D prints.

"Works great. Iron at 200 deg celcius and push gently." Read more

"works exceptionally well as an insert" Read more

"...are a bit deceiving with how many inserts you get but the product does work!!" Read more

"...They work well and provide a strong hold...." Read more

9 customers mention "Installation"7 positive2 negative

Customers like the installation of the product. They mention the inserts are easy to install, the threads are precise, and the bolts thread in very easily. Customers also say the product should come with installer tools.

"...The inserts are very easy to install, even in tougher filaments like polycarbonate. Bolts thread in very easily." Read more

"Good quality inserts, threads screw in nice and tight and have had no issues with them besides user error with me learning how to use it" Read more

"...They were easy to design for and set very securely in my prints. I will be buying them again." Read more

"...a lot of very, very small fittings that are both tiny and extremely difficult to install because of how tiny they are...." Read more

7 customers mention "Quality"7 positive0 negative

Customers like the quality of the product. They mention it's a solid product for DIY enthusiasts and holds well.

"Good quality inserts, threads screw in nice and tight and have had no issues with them besides user error with me learning how to use it" Read more

"...Overall, a solid product for DIY enthusiasts." Read more

"...threads seem good and holds well." Read more

"I expected more! but good product..." Read more

4 customers mention "Secure fit"4 positive0 negative

Customers like the secure fit of the nuts. They mention they set very securely in their prints and provide a strong hold. Customers also say the locking plastic inserts are strong and hard to pull off unless you heat the product.

"...They work well and provide a strong hold...." Read more

"These locking plastic inserts are strong and very hard to pull off unless you heat the plastic to remove them, then the damage is already done to..." Read more

"...They were easy to design for and set very securely in my prints. I will be buying them again." Read more

"...Inserts are easy to install and threads are precise (fillets are not loose). Would recommend !" Read more

Works well.
5 out of 5 stars
Works well.
Works great. Iron at 200 deg celcius and push gently.
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Top reviews from Canada

  • Alexander Douglas
    5.0 out of 5 stars Good
    Reviewed in Canada on July 1, 2025
    Verified Purchase
    Everything looks accounted for
    Helpful
     Report
  • Logan Weir
    5.0 out of 5 stars Good quality inserts
    Reviewed in Canada on June 9, 2025
    Verified Purchase
    Use these instead of printed threads if you can, they are much more durable and will last a long time. The inserts are very easy to install, even in tougher filaments like polycarbonate. Bolts thread in very easily.
    Helpful
     Report
  • mark s
    5.0 out of 5 stars Well organized kit
    Reviewed in Canada on June 2, 2025
    Verified Purchase
    Nice kit
    Would have been hand yo have a data sheet with dimensions for designing in insets to 3D model more accurately
    Helpful
     Report
  • A. T. Stolk
    5.0 out of 5 stars Works well.
    Reviewed in Canada on May 21, 2025
    Verified Purchase
    Works great.

    Iron at 200 deg celcius and push gently.
    Customer image
    A. T. Stolk
    5.0 out of 5 stars
    Works well.

    Reviewed in Canada on May 21, 2025
    Works great.

    Iron at 200 deg celcius and push gently.
    Images in this review
    Customer image
    Helpful
     Report
  • Ray
    5.0 out of 5 stars follow procedure
    Reviewed in Canada on May 5, 2025
    Verified Purchase
    works exceptionally well as an insert
    Helpful
     Report
  • Caleb Spencer
    4.0 out of 5 stars High quality, recommend
    Reviewed in Canada on June 6, 2025
    Verified Purchase
    Good quality inserts, threads screw in nice and tight and have had no issues with them besides user error with me learning how to use it
    Helpful
     Report
  • Client d'鶹
    5.0 out of 5 stars Good price
    Reviewed in Canada on February 25, 2025
    Verified Purchase
    Good price for the quantity bought those for 3d printing and working as advertised.
    Helpful
     Report
  • ken garneau
    3.0 out of 5 stars I expected more! but good product
    Reviewed in Canada on January 17, 2025
    Verified Purchase
    pictures are a bit deceiving with how many inserts you get but the product does work!!
    Helpful
     Report