Threaded Brass Insert for 3D Print, JustPi, pack of 100

JustPi Threaded Brass Insert for 3D Print, pack of 100 (MPN: JUS-22015, EAN: 5904422383572) are metal inserts designed to be embedded into 3D-printed plastic parts to provide durable, reusable M-type threads. These brass inserts reinforce screw connections in prototypes, hobby projects and small-batch production parts where repeated assembly and disassembly or higher clamping force is required. Inserts are compatible with common thermoplastics and can be installed by heat insertion or press-fit depending on the printed material and geometry.

Advantages

Brass construction delivers corrosion resistance and consistent thread form for repeated screw engagements. A pack of 100 provides quantity for multiple projects or assemblies, reducing the need to tap fragile plastic threads. The inserts produce metal-to-fastener contact that increases load-bearing capacity and wear resistance compared with direct thread tapping in plastic. Multiple installation methods (heat or press-fit) allow flexible use across different print materials and designs.

Suitable for

• 3D-printed enclosures and housings needing reliable screw threads
• Prototype assemblies requiring repeated disassembly
• Hobby and maker projects using PLA, PETG, ABS and similar thermoplastics
• Small-batch production parts where reinforced fastening points are required

Key specifications

• Brand: JustPi
• Model / MPN: JUS-22015
• EAN: 5904422383572
• Material: Brass
• Pack quantity: 100 inserts
• Thread type: M-type (metric female thread)
• Intended use: Embedded threaded insert for 3D-printed plastic parts

How to use

Install the brass insert after printing the part. For heat insertion, warm the insert with a soldering iron or dedicated heater and press it into the pre-sized cavity until flush with the surface; the heated brass slightly melts the surrounding plastic to form a secure bond. For press-fit installation, design the cavity with a suitable interference fit and press the insert using a jig or arbor press until seated. Ensure correct cavity diameter and depth during design to prevent cracking or misalignment. Allow the part to cool and the plastic to re-solidify before applying screws.

Usage recommendations

Choose the installation method appropriate to the plastic type: heat insertion is usually effective for PLA, PETG and ABS; press-fit is preferred for tougher or filled plastics where melting may be undesirable. Test insert placement in a sample print to verify cavity dimensions and thread engagement before final assembly.