100Pcs M3 Brass Heat Insert Nuts for 3D Printers

5.0 · 8 reviews
Original price was: $12.78.Current price is: $8.12.
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100-pack of M3-sized brass heat insert nuts designed for 3D printers such as Voron 2.4.

  • Size: 3mm inner diameter, 4mm length, 5mm outer diameter.
  • Knurled design ensures secure embedment in 3D printed parts.
  • High-quality brass material for durability and conductivity.

7 in stock

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Estimated Delivery Time3–7 business days

Precision brass inserts for 3D printing

This pack contains 100 knurled brass heat insert nuts designed specifically for embedding into 3D printed parts. Their M3 size dimensions make them ideal for printers such as the Voron 2.4, providing robust threaded connections essential for assembling printed components.

Durable knurled design

The brass inserts feature a knurled outer surface that ensures they anchor securely when heat-pressed into plastic. Brass provides excellent wear resistance and thermal conductivity, enhancing connection strength and longevity within your 3D printed assemblies.

  • Knurled surface for strong grip
  • Resistant and long-lasting brass material

Key specifications

Dimensions define compatibility and performance for your project.

  • Inner diameter: 3 mm
  • Length: 4 mm
  • Outer diameter: 5 mm

Versatile compatibility

Compatible primarily with the Voron 2.4 3D printer but adaptable to other models requiring M3 size heat inserts, enabling reliable fastening across a range of accessories and printed parts.

Quality assurance and origin

Crafted in Mainland China with attention to chemical safety, these inserts contain no high-concern chemicals, ensuring safe usage during manufacturing and assembly.

What's in the box

  • 100 pcs M3x4x5 brass heat insert nuts
Product FAQ

Frequently asked questions

01 What diameter and length are the M3 heat insert nuts?

These brass heat insert nuts have a 3mm inner diameter, 4mm length, and 5mm outer diameter.

02 What material are these heat insert nuts made from?

They are made of brass, providing durability and good thermal conductivity.

03 How many nuts are included in this pack?

This product includes 100 pieces of M3 threaded brass heat insert nuts.

04 Are these heat inserts compatible with specific 3D printers?

They fit the Voron 2.4 0.1 model and are compatible with other 3D printers that use M3 inserts of similar size.

05 What is the purpose of the knurled design on these nuts?

The knurled surface helps the insert grip firmly within 3D printed plastic parts after embedding.

06 Can these nuts be embedded directly into 3D printed parts?

Yes, they are designed to be heat-inserted into plastic parts to provide durable threaded connections.

07 Are there any chemical hazards associated with these inserts?

No high-concern chemicals are involved in these brass threaded heat insert nuts.

08 Is this product customizable or available in other sizes?

This product is offered as M3 size with dimensions 4mm length and 5mm outer diameter; no customization details are provided.

09 Where are these heat insert nuts manufactured?

They are produced in Mainland China.

10 What type of nuts are these classified as?

These are thick, knurled brass threaded heat insert nuts for metalworking and 3D printing applications.

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SKUGA_192349

Discussion

5.0
Based on 8 reviews
Rating
j***n July 17, 2026 ★ ★ ★ ★ ★

Good looking inserts. just make sure you pick the correct size you want before clicking buy

AliExpress Shopper May 26, 2026 ★ ★ ★ ★ ★

I recommend

G***y February 4, 2026 ★ ★ ★ ★ ★

Ok thanks

P***n February 4, 2026 ★ ★ ★ ★ ★

Ok :)

l***r January 22, 2026 ★ ★ ★ ★ ★

Ok