M3 Brass Heat Insert (20PCS)

Product Description

The M3 brass heat insert is designed to create strong, durable internal threads in plastic and 3D printed parts.
Specifically, this brass heat insert with 4.6 mm outer diameter, 3 mm inner thread, and 5.7 mm height provides excellent pull-out resistance and long-lasting thread strength. As a result, it is ideal for applications that require repeated screw installation and removal.

Moreover, the brass construction offers excellent heat conductivity, allowing smooth and precise heat-set installation using a soldering iron or insertion tip. At the same time, the knurled outer surface ensures a strong mechanical bond once installed. Therefore, this insert is a reliable solution for reinforcing threads in PLA, PETG, ABS, ASA, Nylon, and other plastics.

Features of the M3 Brass Heat Insert

• M3 brass heat insert for plastic and 3D printed parts

• Outer diameter: 4.6 mm

• Inner thread: M3 (3 mm)

• Height: 5.7 mm

• Designed for heat-set installation

• Knurled exterior for strong pull-out resistance

• Corrosion-resistant brass construction

• Ideal for repeated assembly and disassembly

Specifications

• Product Type: Heat-Set Threaded Insert

• Thread Size: M3

• Inner Diameter (ID): 3 mm

• Outer Diameter (OD): 4.6 mm

• Height: 5.7 mm

• Material: Brass

• Installation Method: Heat-set (recommended)

• Compatible Materials: PLA, PETG, ABS, ASA, Nylon, and similar plastics

Applications of the Brass Heat Insert

• 3D printed parts and enclosures

• Plastic housings and brackets

• Electronics mounting points

• Voron and other DIY 3D printer builds

• Prototyping and small production runs

• Repairs and reinforcement of plastic threads

Why Choose the M3 Brass Heat Insert

Because it combines precise dimensions, strong thread retention, and easy heat-set installation, the M3 brass heat insert is an essential component for professional and DIY projects. Whether you are assembling a 3D printer or reinforcing plastic parts, this insert ensures reliable and long-lasting threads.