Brass Insert M3x12 for 3D Printer Parts

• The Brass Insert M3×12 is a high-precision M3 heat set insert built to create durable, repeatable threads in 3D printed and plastic parts.
• Instead of relying on self-tapping screws that can strip soft materials, this brass threaded insert provides strong M3 internal threads for reliable fastening in PLA, ABS, PETG, nylon, and other plastics.Made from high-quality brass, the insert offers excellent corrosion resistance, long service life, and strong heat conductivity—ideal for heat-set installation.
• Its knurled outer surface is designed to bite into the surrounding plastic, helping prevent rotation and pull-out under load.
• This makes the Brass Insert M3x12 especially useful for parts that see vibration, repeated maintenance, or higher clamping force.With a 12 mm length, this Brass Insert M3x12 provides deeper engagement than shorter inserts, improving holding strength in brackets, mounts, enclosures, and structural components.
• It’s widely used in 3D printer parts, robotics assemblies, electronics housings, and DIY engineering builds where durable metal threads are needed inside plastic.

Specifications

• Product name: Brass Insert M3x12
• Model: M3×12
• Internal thread: M3
• Length: 12 mm
• Outer diameter: 4.4 mm
• Inner diameter: 3 mm
• Material: high-quality brass Inserts
• Finish: natural brass
• Installation: heat insert / press fit
• Compatibility: plastic, wood, 3D printed parts
• Application: 3D printer parts
• Available variations: Brass inserts M3x5, M3x6,M3x8, M3x10 etc

Key Features

• Precision M3 threaded insert compatible with standard M3 screws
• 12 mm length for deeper engagement and stronger hold
• Knurled exterior for secure grip inside plastic and printed parts
• High-quality brass for corrosion resistance and durability
• Supports heat-set or press-fit installation

Applications

• 3D printer parts: mounts, brackets, frames, upgrades
• Robotics and mechanical assemblies using reusable fasteners
• Electronics enclosures and plastic housings
• DIY and maker projects needing reliable metal threads

Package Include

•  1 Piece of M3x12 brass heat set