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Metal-strong, reusable threads for your 3D prints. Heat-set in seconds with a soldering iron and upgrade every joint from fragile plastic to durable, serviceable hardware.
Available in M2–M12 (Standard & Short). Works with PLA, PETG, ABS, ASA, Nylon, and more.
🔥 Heat-Set Install • 🦾 High Holding Power • 📐 Precise Fit
Trusted by makers and prototyping teams across Europe.
Never strip another 3D print thread again. 3DTrcek Brass Threaded Inserts transform weak plastic threads into industrial-strength connections that last. Effortless & reliable. Available in sizes M2 to M12 for professional strength and durability.
Stop dealing with weak threads and failed assemblies — secure your prints like a pro.
Works with PLA, PETG, ABS, Nylon, TPU, and more.
Heat-set with a soldering iron in seconds, no specialized tools necessary.
From tiny M2 screws for electronics housings to larger M12 threads for heavy-duty functional prototypes.
Our heat-set system makes adding strong threads effortless
Warm the insert with a soldering iron
Press into pre-designed hole
Let cool for strong, permanent hold
Find the perfect insert size, installation tip diameter, and recommended wall thickness for flawless results in your 3D prints.
Type | Length (mm) | Insert Diameter D1 (mm) | Installation Tip D2 (mm) | Hole Diameter D3 (mm) | Min. Wall Thickness W (mm) |
---|---|---|---|---|---|
M2 | 4.0 | 3.5 | 3.1 | 3.2 | 1.3 |
M3 | 5.7 | 4.6 | 3.9 | 4.0 | 1.6 |
M3S | 4.0 | 4.6 | 3.9 | 4.0 | 1.6 |
M4 | 8.1 | 6.3 | 5.5 | 5.7 | 2.1 |
M4S | 4.0 | 6.3 | 5.5 | 5.7 | 2.1 |
M5 | 9.5 | 7.1 | 6.3 | 6.5 | 2.6 |
M5S | 5.8 | 7.1 | 6.3 | 6.5 | 2.6 |
M6 | 12.7 | 8.7 | 7.9 | 8.1 | 3.3 |
M8 | 12.7 | 10.2 | 9.5 | 9.7 | 4.5 |
M10 | 12.7 | 12.6 | 11.8 | 12.0 | 6 |
M12 | 15.6 | 15.6 | 13.8 | 14.0 | 7 |
Electronics enclosures, robot arms, drones, furniture jigs, printers & fixtures — anywhere you need reliable assembly.
Experience the difference of precision engineering. Stop wasting time on weak threads and failures.
Don't just take our word for it – see why thousands of 3D printing enthusiasts trust 3DTrcek for their strongest assemblies.
"These inserts transformed my prints! No more stripping – they hold tight every time. Perfect for my functional prototypes."
– David, Hobbyist Maker
"I switched to 3DTrcek for the quality. The precision grip is unmatched, and they've never pulled out in my designs."
– Martin, Product Designer
"As a business owner, reliable threads save me time. 3DTrcek inserts have cut failures and boosted my efficiency."
– Robert, Small Business Owner
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