The 7 Best plastic screw hole inserts (2023 reviews)

We consider a plastic screw hole insert to be a worthy investment in the long run. We are here to help you choose the right one for your purposes from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Glarks plastic screw hole Insert READ REVIEW

Best With Bolt: Buy: Swpeet plastic screw hole Insert READ REVIEW

Best For projects: Buy: Meiyyj plastic screw hole Insert READ REVIEW

Best For mounting into tapered holes: Buy: Bonost plastic screw hole Insert READ REVIEW

Best For metal: Buy: Vit Sport plastic screw hole Insert READ REVIEW

Best For several months: Buy: 3Dzwman plastic screw hole Insert READ REVIEW

Best Feature: Easy To install: Buy: Mellbree plastic screw hole Insert READ REVIEW

Best Overall: Glarks plastic screw hole Insert

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The insert is a must have accessory for your daily purpose. It is great for 3D prints needing strong threads. It is made of premium brass material, heat resistant, wear-resistant, acid-resistant rust-proof, anti-corrosive and non-toxic, high hardness for long time use. It can be installed by ultrasonic or heat into a thread tapered hole, or molded in during injection. Use these all the time, super useful for anyone making functional 3D prints.

It has a conduction valve, so there is no need to back-drill and counter-sink the hole.

• Great alternative to using nuts to connect parts
• Much better at resisting tear-out than torque
• Works nicely with 3d printed items
• High quality knurled thread inserts nuts assortment kit

Best With Bolt: Swpeet plastic screw hole Insert

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The swpeet plastic screw hole insert is suitable and reliable and fits well with your daily usage. These brass threaded insert embedment nuts can be installed into the tapered holes of the threads by ultrasound or heat, or moulded during injection. The utility you get from them is bound to what you can think of making, but they are extremely capable of helping create nice things. It makes your holes 0.15-0.2mm larger than the body (not the pointy parts) of the insert.

These female thread knurled nuts are made of durable brass with excellent rust resistance and oxidation resistance to ensure long-term use. It can be used in laptop plastic case, desktop computer plastic case, gps plastic case, router plastic case, mobile phone plastic case, unlimited communication facilities plastic case, household appliances plastic case, automobile, electrical appliances, medical, electronic and other plastic case.

It has a conduction valve, so there is no need to back-drill and counter-sink the hole.

• Rust-proof, anti-corrosive, non-toxic, acid-resistant, and does not release harmful substances
• Accurate size makes your installation or maintenance easier
• Must have for 3d print projects

Best For projects: Meiyyj plastic screw hole Insert

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The meiyyj plastic screw hole insert's superior materials makes sure that it ages well with use. These brass threaded insert embedded nuts can be installed by heat into a thread tapered hole or molded in during injection, the insert has a guide so there is no need for a counter bore or countersink. It is great for repair the laptop frame. It is made of premium brass, which has high hardness, no deformation, durable and reliable for long time use. It is great for heat-set inserts for small 3d printed parts. It can be used on laptop plastic case, desktop computer plastic case, gps plastic case, router plastic case, mobile phone plastic case, unlimited communication facilities plastic case, home appliance plastic case, car, electrical appliance, medical, electronic and other plastic case. It comes with little tweezers to help out.

• Perfect way to add threads to acrylic
• Great inserts with less common features
• Lot of satisfied buyers

Best For mounting into tapered holes: Bonost plastic screw hole Insert

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Not everyone likes to purchase insert for their regular usage, but the bonost plastic screw hole insert would be an anomoly. This assortment provides a wide range of physical sizes and thread specifications, and would be a great starter set. They are nice and quality and plenty of different sizes, which will be great for all sorts of stuff going forward. The packaging is also well done and keeps the inserts organized.

These thread inserts are of very good quality and good value and they are also easy to install and they are accurate and very sturdy. It is easy to carry a threaded insert kit. It has a smooth surface without burrs and is easy to install. The case keeps everything organized and easy to access when the time comes time comes. This is a perfect set to have if you have a 3d printer.

• Nice package and assortment of threaded inserts
• Large selection of decent heat-set inserts
• Just enough undersized to grip the insert without filling the insert with excess plastic
• Great kit of assorted threaded inserts

Best For metal: Vit Sport plastic screw hole Insert

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The vit sport plastic screw hole insert is satisfactory and appropriate and fits well with your daily purpose. This is the ultimate upgrade to your 3d printed parts that need to be screwed into something and something screwing into your part. It's made of a very soft, easy to strip brass. The threaded inserts are all slightly larger than the tips. It's very temperature controllable and the knurled nuts just slide right in it in place with ease. There's a temperature control module so you can set your temperature at what you need for the plastic you're working with.

It works well and is similar to what many 3d printers use. It's affordable and certainly is capable of doing a good job.

• Saves time when pressing lots of inserts
• Perfect to get those knurled nuts into plastic
• 100 times better than a soldering iron

Best For several months: 3Dzwman plastic screw hole Insert

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Compared with other insert in this category, the 3dzwman plastic screw hole insert has a convenient design. It is a diy kit with simple structure. It is equipped with a ceramic heating element and has intelligent thermostatic control. It can hold up, the iron they use is well made, holds temp well and has a very large amount of adjustability as far as the temp goes. It is composed of all metal parts. The threaded end is smaller than the diameter of the hole in the extrusion. It is used for 3D printing heat-set insert installation and plastic parts to keep. The materials and build are very nice. It takes you more than ten minutes to enjoy the fun of installation.

• Very easy to build/setup and use
• Easy assembly and great customer support
• Lot of satisfied buyers

Best Feature: Easy To install: Mellbree plastic screw hole Insert

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate insert. The mellbree plastic screw hole insert is exactly that - it's a simple insert that hits all the right notes. These M3 brass nuts can be widely used in 3d printing injection molding to achieve tight fixation. It allows the knurled edges to grip the sides. It is great for 3d printed pieces. It can be used in 3d printed parts, but also can be widely used in electrical injection molding, automotive plastic shells, and notebook plastic shells.

The diameter of the front end of the nut is slightly smaller, so that you can easily align the nut in the reserved 3d printing hole. It is easy to install using a soldering iron at low setting and a 5 mm diameter hole in the piece. There is a custom tip that makes it easier if you have it. These add a really nice touch to a 3D print with fasteners.

• Easy set in place with a soldering iron
• One of the new comers and featured product