180Pcs Pofsnnx M3 Threaded Inserts, Brass Heat Set Insert for Plastic and 3D Printing Components, Metric Knurled Nut Classification Combination Kit(M3xL4xD5, M3xL8xD5)
$7.59
From the brand
Pofsnnx
Pofsnnx specializes in manufacturing high-precision metal components.
Introduction
Pofsnnx is a brand specializing in hardware accessories, guided by the principles of “meticulous manufacturing, ultimate quality, and customer-centricity”.
We are dedicated to providing high-quality, cost-effective products, enabling users to complete their work more efficiently and conveniently. Whether you’re a professional or a DIYer, our products are crafted with precision to ensure durability and reliability.
M2-M6 Set
M2 Heat Set Insert
M2.5 Heat Set Insert
M3 Heat Set Insert
M3 Heat Set Insert
M4 Heat Set Insert
M5 Heat Set Insert
M6 Heat Set Insert
Package Dimensions : 2.76 x 2.4 x 0.67 inches; 3.18 ounces
Date First Available : July 25, 2025
Manufacturer : Pofsnnx
ASIN : B0FJXNWRZ2
Best Sellers Rank: #21,393 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #32 in Nut Inserts
Customer Reviews: 4.9 4.9 out of 5 stars 27 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Premium Brass Material: Made from high-quality brass for excellent heat conduction and corrosion resistance, ensuring durable, long-lasting threaded connections in plastic and 3D-printed parts
Strong & Reliable Hold: Knurled outer design grips tightly into plastic, preventing rotation or loosening, while high pull-out resistance ensures secure fastening even under stress
Easy Heat-Set Installation: Quickly melts into place using a soldering iron or heat-set tool (not included)—no glue or extra hardware needed for a clean, professional finish
Perfect for 3D Printing & Plastic Assembly: Ideal for PLA, ABS, PETG, Nylon, and other thermoplastics, widely used in 3D printing, robotics, RC models, electronics enclosures, and DIY repairs
180PCS Pro Kit: Cost-effective bundle for frequent users—enough for multiple projects without reordering. Includes M3*4*5mm and M3*8*5mm variants for versatility
fiddlepat –
Works well if installed without misalignment
These are small and easy to press in misaligned if not careful. One should really have a small press to insure perfect alignment. I struggled a bit using just a hand held soldering iron but after a bit of practice they were acceptable. Nice to have the 2 lengths and the thread holding power is adequate. Price was a bit lower that other options and they resulted in good value for me once I became more proficient with my assembly technique.
CVABuck –
Good fit.
They’re brass threaded inserts. The thread specs are good. There’s not a whole lot else to say about that.
R. Pinson –
Simple and functional.
There’s not much to be said about heat set inserts. The inner threads are cut clean and I experienced no binding or cross threading. The exterior texture is sufficient to give softened/molten plastic plenty to grab on to. They do the job they’re meant to do, and do it reasonably well.
PhotoAndTechGuy –
Solid Inserts That Melt in Smoothly
These inserts are perfect for small-scale 3D printing projects. They install cleanly with a soldering iron and hold tight without cracking the plastic. The knurled design grips well, and the variety in sizes is super useful. I’ve used them in multiple builds no failures, just solid results.
USAP –
Decent brass inserts, price a little high
Please see my disclaimer for Vine provided items at the end of this review.Packaging – Clear plastic case , Plastic BagsLabeling – Custom Label[yes] Brand Name/Dimensions/Fastener Type/Quantity List[no] – – -Cleanliness – CleanCounted Quantity – 80x (M3x6.0), 100x (M3x3.0)Description Accuracy – GoodAveraged Measured Attributes: (M3x6.0)Insert Length – 6.02mmBody Diameter – 4.51mmKnurling Quality – GoodDimension Consistency – GoodThread Quality – Decent (slightly wider tolerance than average)Magnetism – Very LowAveraged Measured Attributes: (M3x3.0)Insert Length – 3.02mmBody Diameter – 4.53mmKnurling Quality – GoodDimension Consistency – GoodThread Quality – Decent (slightly wider tolerance than average)Magnetism – Very LowSummary:Decent pack of threaded inserts with two distinct sizes. Not as many pieces for the price as other kits. Reasonable value.Price: $9.58 (at time of order)Quality: DecentValue: ReasonableVine Review Program Disclaimer:My goal, as part of the Vine program, is to provide clear and informant feedback on product details that matter to YOU. I review every item from the position of a product I have PAID for. Cost, Quality, and Value are all vital points in the decision to purchase a product. Leave me a thumbs up if I’ve helped you determine if a product is worth buying.
Jay Frost –
Work OK for 3D prints
I got these small threaded inserts for some small 3D printed parts and designs. The quality of these inserts is great– they thread perfectly with M2 screws and the external dimensions are accurate to what I expected. I have no issue with the product, but I will mention that for 3D printed parts these may not be the best. The small size of the M2 fitting doesn’t give the plastic a ton of surface area to grip the insert. I recommend using M3 inserts, as this size of those gives a much firmer hold on the plastic.
Jim M. –
Great for 3d printed parts
These heatset inserts are great for repairing existing items and for making robust threaded holes in 3d printed items. I use them for the latter. Just align to your hole and use a soldering iron to heat them and sink them into place. Temperature will depend on the material you are inserting them in. You may have to experiment a little.
Cody –
Easy to Use – Perfect DIY Solution – 3D Printer Must Have
~~ Pros ~~• Perfect for 3D Prints!• Easy to install!• Made for DIY projects~~ Cons ~~• None!•~~ Verdict ~~• Simply easy to use and perfect for any DIY 3D print model which requires extra strength and assembly. This come in handy all the time being a small business owner involved with 3d printing. Almost all assemblies I’ve modeled and printed require these simply due to the increased strength and rigidity these add to all models. If you’re needing to do a project and want extra holding power well get these and use them!